Would we see Intel/Samsung/IBM contribute to the Linux kernel if it wasn't in their self-interest? That's just how business tends to go as a general rule, IMHO. At least, I generally are more surprised to see a company go the extra mile than the opposite.
No, but there's a long time since those got to skirt regulations because they claimed they were not evil or did the right thing.
The problem with Google is it went from actual friendly actually competent giant to (somewhat) incompetent[1] giant monster[2] in one decade.
[1]: you might not agree, but come back when their own verbatim option works correctly over time: that hasn't been the case for a decade or so now. If they can't even get that right they are at least somewhat incompetent as a group even if every single one of them are brilliant.
[2]: Not because they want to be one or try to but this seems to be what happens with giant corporations. It is kind of like the AI paperclip machine: it optimizes (i.e. destroy) everything around it to make paperclips, or in Googles case: quarterly profits.