Is that really the worst thing you've seen big-tech do? That's very fortunate.
What about Blackberry Messenger which was the mobile instant-messaging golden standard for years and BB exclusive for as long as it mattered in the market? Was that too long ago to remember?
Apple refusing RCS integration is a very clear example of hurting everyone in pursuit of profit
it's likely not the most evil, but I do think it qualifies as evil. it stands out by being inarguably willful, and having a very broad impact
I find harming hundreds of millions (probably billions) of friendships to be quite evil
Apple didn't integrate with RCS because RCS was a fragmented pile of garbage. It still is, but it's I suppose less fragmented now.
None of that "harmed" friendships, certainly not any real ones.