We have to figure out a way to get out of FB social, iOS/Android phone, Google/Microsoft email, AWS/GOOG/MSFT cloud oligopolies. There is no competition and there will be massive rentier capitalism extraction from all these players for the rest of civilization.

There's competition, but no one is interested.

TBH, I blame IT leadership. The easy choice is Google or Microsoft. "No one ever got fired for buying IBM" is now "No one ever got fired for subbing to Office." Someone needs to bite the bullet and stitch together an alternative array of services. They've cultivated their own monoculture by hitting the easy-button and forking over for Office365, etc.

Which if we're being honest, Microsoft and Google products are rarely best-in-class at any one thing that they do. Teams, SharePoint, Google Docs, someone somewhere is doing those things much better. Those competitors just don't necessarily have a whole ecosystem that makes it a big Easy Button for corporate IT to smash. And they sometimes charge as much by themselves as Office365 costs in whole. But I know one problem my own employers IT team struggles with a bit is putting out the constant fire of different teams deciding the Microsoft tool we pay for sucks and going rogue and trying to subscribe to something else. Dropbox was a big one, but Teams and Planner alternatives come up a lot too.

Not pretending to have all the answers but it doesn't seem to be a completely intractable problem.

It starts by just avoiding them as much as possible. E.g. self-host email. If you encounter a system that refuses to receive your email, I give you permission to use your old Gmail account with that system, while using your self hosted account for everything you can.

If your email is Google or Microsoft, there are other people with self-hosted email who feel pressured to use their Google or Microsoft accounts to send email to you.