Exactly, that's illegal under US anti-trust law. It's called product tying. It's legal to achieve a monopoly by competitive means, via pure excellence in prod

Exactly, that's illegal under US anti-trust law. It's called product tying. It's legal to achieve a monopoly by competitive means, via pure excellence in product and operations. But it's illegal to then attempt to achieve another monopoly in a different product by tying it to your legal monopoly product. That was part of the US DoJ suit against Microsoft in the 90s.