Ah, the Overleaf model.
Am I crazy to think there should be some way to stop this? It's utterly anticompetitive, but ai don't know any country where they bother trying to stop a small company buying/killing its competitors.
You'd think this should encourage people to build carbon-copies of the tools that have been bought out in the hope of being bought out... It's only a sustainable model if it's fringe enough and with low enough purchase amounts to not eventually become an exit strategy for people who might not even have tried otherwise.
Seems like open source is the way to defeat this. Anyone can easily create a competing service, which they then have to buy out, but the cost of setting up a new one is minimal. Interesting business model that feeds on anti-competitive businesses.