GPS buys Solomon - MS buys GPS - MS buys other small players - MS "supports" them while forcing everyone to SQL server - MS announces "Microsoft Accounting" and lo and behold, all competition is gone and the final product bears no resemblance to the victims of their acquisitiveness - they've leveraged one monopoly to create another.
That's illegal - but it doesn't matter, because the world is operated by drones and equally immoral people.
If your primary motivation is to act well and justly, you are screwed. This was formerly known as "nice guys finish last".