Sure, but the company fronted the millions of dollars required to develop the technology. The investment needs to come from somewhere.
That doesn't have to be a private company, though. We need public funding that retains the patent rights, if not just to make the invention free from licensing costs to manufacture.
The insane thing about our current system is that we do have public funding, but private companies wind up with the patent anyway
That's not how metabolism works. You'd need to get into a starvation state before the number of calories getting burned changes significantly - and that takes a long time.
If you actually need constant snacks throughout the day, you should get checked for diabetes.