Woodpeckers for example does not patent many of their designs AFAIK, Lee Valley certaily does. Woodworking inventor Mark Duginske does. He has a lot, perhaps some on things you've owned. He wrote the English manual/guide for the INCA machines in the 1980s I believe and knows his stuff. I think he invented cool blocks for example.
I have a book I have read called "How To License Your Million Dollar Idea" where the author discusses getting it out on the market quick and at volume, making your money at the front end, because even if you do get a patent preventing competitors from either making straight knockoffs or stuff that solves the same problems cheaper will happen pretty quick.
Recently I saw a Kickstarter of a lift table with a sliding thing so you put your heavy stuff on it, crank it up, then slide it into your truck bed. It's not that clever really and overpriced imo but within thirty seconds of looking into it I found a Chinese maker had beat them to market with one that was electronic, motorized instead, a more attractive product to many I imagine, and I found it far cheaper than the Kickstarter's launch price. I told them and they were like "uhh, we couldn't find anything online" so I sent them a picture and they said "uhh, we had our thing made in China and they must have stolen our idea and ours is better and we're going to talk to our lawyer".
I dunno. I think they are up the creek before they've even got it into production...
btw, Festool and Kreg imitated track saw system ideas first introduced/invented by Dino of Eurekazone, which faded into obscurity after and eventually shut down.