By releasing a paper you are specifically telling the world, “hey look I did this thing for no comp, pomp or circumstance and I thought it was interesting enough to share with the world”. You get academic interest and credit when your paper is cited. It’s not “prior art” in any negative use of the term when a company takes the ideas in an academic paper and builds a product around them. This is a standard and well understood cycle where academic research happens and then gets applied to industry. Have you heard of a company called Google? And are you sure Jev is based on your work, or did you just do something similar? Ideas are cheap…

Generally they do credit the papers and/or people who developed the theory behind their product.

Researchers definitely do get paid for research. That Google company you mention funds research which can be integrated into their products.