The biggest problem I can see is they would be competing with their own saw. They like the idea of having the only saw that won't cut hot dogs. I forget who it was but another company started making a similar device and their lawyers stomped them in the ground to keep the monopoly on it. Then they would probably have to invade on someone else's patents to make the accessory for another brand saw. They could care less how many fingers it would save, it's all about money.
The stomped company was Bosch. SawStop obtained a court ruling to block importation of the REAXX jobsite table saw into the US. Fortunately, I had bought my REAXX before the ruling took effect.
I agree that SawStop's motivation is greed, not personal safety. They wanted such high licensing fees for their patents that nobody would pay them. Unable to license their patents, they resorted to making their own saws, which is fine.
What upsets me is that SawStop has been actively lobbying the US government to require SawStop technology in all table saws. SawStop wants to force other table saw manufacturers to pay the unreasonably high license fees that the other manufacturers would not or could not pay before. SawStop could not sell their licenses in the open market fair and square, so they resorted to lobbying the US government into extorting the fees from the other table saw manufacturers.
Shame on SawStop. They could have made a fortune by setting reasonable license fees for their technology. Just think of how many injuries might have been prevented if everyone had licensed their technology 15 years ago. With the patents due to run out in three years, it is probably too late for SawStop to drop their license fees and get the other table manufacturers on board. The lead time to design and produce table saws with SawStop technology would consume much of the remaining years on the patents anyway. I predict that it portends SawStop's doom. I predict that SawStop sales will drop precipitously, starting on the day that their patents fall into the public domain.
In my opinion, SawStop does not care about woodworkers, only money. That said, SawStop makes excellent saws, and I still recommend them to others, lacking any alternatives.