The Story
He Gives Away the
Whole Playbook
In October 2012, Greg Isenberg launched a video curation app called 5by out of Montreal. By September 2013 - eleven months later - StumbleUpon had acquired it. Not a particularly well-known startup outcome. Except for one detail: it was StumbleUpon's first acquisition ever. Garrett Camp's company, which had been around since 2001, had never bought anything before. Eleven months in, Isenberg handed them a reason to start.
That tempo - sharp, unconventional, faster than the room expects - has become his signature. He does not build slow. He does not raise money. And in an era when every founder's Instagram is a highlight reel of VC term sheets and TechCrunch coverage, Isenberg became famous for the opposite: giving everything away.
Products can be copied, but communities can't.
- Greg Isenberg, @gregisenberg
His Twitter account, @gregisenberg, reads like someone left the strategic planning document for a startup studio unlocked in a public park. Thread after thread of specific, researched, actionable startup ideas - not vague inspiration, but actual businesses with audience hypotheses, monetization mechanics, and distribution angles baked in. He has shared over 2,100 of them. For free. The logic is not charity: distribution is harder than building a product, so the ideas are the marketing, and the brand is the business.
The most viral thing he ever posted was a thread about lessons from interviewing five billionaires. The observations mixed lofty ideas with mundane details - "they don't use alarm clocks" - and it worked because readers realized they had more in common with billionaires than they thought. The gap between a billion-dollar founder and a normal person turned out to be surprisingly narrow. That insight was Isenberg in concentrated form: make the intimidating feel reachable, then show people the path.
After 5by, he founded Islands - a community and messaging platform he described as Discord for college campuses, before Discord had fully arrived at that positioning. Greylock Partners backed it. Scott Belsky, Erik Torenberg, Howard Lindzon joined the cap table. In 2019, WeWork acquired Islands. Greg became Head of Product Strategy. Then WeWork's IPO fell apart, the company collapsed from a $47 billion valuation in roughly six months, and Isenberg watched the whole thing happen from the inside.
If there is a formative experience for Late Checkout - the holding company he built afterward - it might be that: watching the most hyped VC-backed company on earth detonate in real time while its most community-focused features quietly survived. He left. He became a growth advisor to TikTok during its Western expansion. He advised Reddit on creator products. And in June 2020, he and his McGill connection Theo Tabah launched Late Checkout with no outside capital, no press release, and no permission from anyone.
This is the greatest time ever to build a company (thanks to AI). My first startup I built in college took 1.5 years to build the prototype. Today, you can hack a product in 24 hours.
- Greg Isenberg, on the current building window
Late Checkout is now an eight-figure holding company. It operates like a studio, an agency, and a media brand simultaneously. The portfolio includes Boring Marketing, which manages over $100M in client ad spend. Design Scientist, which did $1M in revenue and $450K in profit in a single year. "You Probably Need a Robot," which bills itself as the largest AI community on the internet. Startup Empire, a Skool community for people building cash-flowing internet businesses. Vibe Marketer, an AI marketing tool. The Startup Ideas Podcast, which publishes twice a week and has crossed 320 episodes. A Substack newsletter with over 150,000 subscribers. Built with zero outside capital. Generating eight figures.
The framework underlying all of it is what he calls ACP: Audience first, then Community, then Product. Most founders invert this sequence. They build a product, then scramble for distribution. Isenberg argues this is the most common and most expensive mistake in startup-building. Build the audience first - even just a social account - create a space where people with the same problem or identity gather, then give the community a product that solves their shared goal. It sounds obvious until you try to reverse-engineer it in someone else's business and realize almost nobody actually does it in the right order.
He is currently deep into AI - not as a trend follower but as someone who watched his 2012 prototype take eighteen months to build and now sees that same product possible in a weekend. "Building agents that revolutionize how traditional industries work with information," he wrote in 2025, "is the clearest path to building a $10M ARR AI business." He is not predicting this from the outside. He is building it.
In 2023, Greg got married. Small ceremony, immediate family only. He had met his wife at a friend's dinner party in Miami in 2019, proposed, and married within 45 days of the proposal. He keeps his family life almost entirely private - which on a Twitter account with 500,000 followers requires active, deliberate effort. The speed with which he moves, in business and in life, is not a pose. It is a consistent operating principle.
His Threads bio says: "i exist to make you win in the AI age." No capitalization. No period. No hesitation. That's the pitch and the business model at the same time - a man who has built his empire by convincing a large and growing audience that his success is transferable, and then doing the work to make that true.
