Tobii is pretty intense about this stuff, esp re licensing. Their gaming stuff can’t be used for research, for example. It’s a similar vibe to eInk.
“The license you accept only applies to their software, not to their hardware.”
As far as I know, their EULA has three groups: gamers, commercial, research. You can buy a 3000€ research license that simply allows you to collect the eye tracking data on the basic 250€ devices…