They'll slash most of the communities away (even if they initially lie about their intentions and pretend they won't do that) and keep the focus on the tech part of the network.
Knowledge services are not great businesses, they're almost entirely incompatible with the venture capital model. Those that take VC all eventually get force-liquidated, without exception. Stack Exchange is still pretending to be a knowledge service. As they took on more venture capital they pivoted to being primarily HotJobs 3.0. The only way they were going to avoid that outcome, is to 1) never take major venture capital 2) stay super thin operationally; they did neither, so they get liquidated, it's only a question of time now.
The Internet will need to replace Stack Exchange with a new platform in the near future, as it'll combo rot and most of the communities will be killed off after SE is sold. I'd advise someone/s out there to get started on replacing SE right now, as by the time you get a new platform up to speed (assume a few years), SE as it has been thought of over the prior decade will be on its last legs and the new platform will be in prime position to step in. And please, do it right, do not take venture capital, which is a devil's bargain for knowledge services: they will kill you in the end, guaranteed, every single time. I've been closely watching this stupid story repeat in the knowledge space for over two decades now. Go the non-profit route ideally, or alternatively go with the wikiHow approach and stay thin (it's the sole viable option to survive long-term as an independent knowledge service business).