They would encourage manufacturers to adopt some form of safety system, even if it wasn't theirs, if their goal was to keep table saw users safe.

There is some plausible deniability if the competing systems are not as good as theirs - is something better than nothing, or does it create a false sense of security, etc. - but it is pretty clear that Sawstop values profit over the safety of people who can't afford their system.

Worse, SawStop is trying to push legislation mandating their system. If they succeed, it would prevent any other system from being developed, even in the absence of patents.

Imagine Microsoft pushing for a law requiring all computers to run Windows. "Why wouldn't they try"? Sure, they can try. And they would be hated for it. As is SawStop.