I read speculation on another site that said that perhaps Wacom refused to partner with Surface Pro 3 because that device was more similar to devices that Wacom

I read speculation on another site that said that perhaps Wacom refused to partner with Surface Pro 3 because that device was more similar to devices that Wacom themselves make. I'm actually not familiar with this area at all, but I guess the argument is that the smaller screen size of Surface pro 1 and 2 made it different enough from the Wacom tablets, where as Surface Pro 3 kind of fudges that line. Again, just repeating what I read on another site. I'm not actually familiar with Wacom devices.