Normal people aren't constantly engaging in a fight for survival in every aspect of their lives, and I don't think it's a good thing to ask them to. We should expect the people we deal with to be acting in good faith. I think it would be bad actually if I had to consider if you're going to make money off of my idea when talking to you.
Asking everybody to be constantly vigilant of possible exploitation by megacorps puts an undue burden on individuals. We should have strong and durable protections against those megacorps in other ways.
What I'm saying is that this sort of copying should be criminal (not just illegal, but criminal) and Microsoft, the legal entity, should be held accountable and fined. I acknowledge that this isn't currently possible with our legal framework, but we should work to make it possible.