A predator is someone who initiates the use of physical force. Microsoft has pointed a gun at no one. Not in the proper, derogatory, traditional sense of the term. Free competition is not some Marxist, egalitarian, perfect ideal where all competitors end up with an equal market share of a given industry. Whether in sports, or in business, the whole point of competition is to beat your competitors even to the point of having them going out of business.
Innovation is the process of discovering a better way to do things.
The only way to halt innovation is by the threat of physical force, which is a legal power that only governments possess. This sloppy metaphor is a vicious lie. Only the government has the legal power to twist and even break arms. The only twisting Microsoft engaged in was the legitimate practice of setting the terms of sale for its property. For a real example of arm-twisting see what happens when you refuse to hand over half your income to the IRS next April.