Tofu can substitute pretty much everything. I myself love me a good tofuque monsieur, which is a good old ham and cheese toast only with tofu instead of the cheese, ham and bread.
Sure, but if sales inevitably drops after a large acquisition, it would be a better market for smaller players and less incentive for the megacorps to gobble up everything.
Sure, you should avoid products and vendors that lock you in or even just try to nudge you to using their other products (because that's usually how the lock-in starts). O365 changing the default save location to Onedrive comes to mind. (Insert Hank Hill onedrive meme).
I guess there can be cases where you truly don't have much of a choice.
Unless we start thinking a lot more about how we choose products and vendors, we are just going to build our own European tech giants and the tech broligarchy will follow anyway.
We need to kill the mindset of "I can only use this particular product" whether it is O365, Coca Cola, Tesla or European equivalents. There is always another product and where you put your money has as real consequences as a democratic election.
Someone finally got that bribe that the whole thing was about all along. Can't wait to learn what "causes autism" next.