Why is the INtel XDK free?
Whats the benefit for Intel?
Do they store the source code of all your games or do they sell your private information like google, facebook etc.?
My assumption would be in that they want to promote the Tizen platform
x86 optimization. They want developers to do more x86 stuff because ARM is pwning them hard since forever and lately Intel realized how big a pie it is on mobiles, they want their share.
Develop games in your browser. Powerful, performant & highly capable.
Intel wants to promote it as Samsung with Tizen.