What I'd like to see is that this fiasco encourages studios to produce their own engines rather than using the pre/existing selection. I'd happily wait another 5-7 years for a new game on a new engine then have a new game in two years that feels identical to others. And then open-source it and let the creativity roam free.
Square enix spent millions on their in house engines (luminous engine). They have a good report on how and why it wasn't a great investment (10 year delays on projects). They've switched to unreal for everything now.
On top of that, FF16 is using some custom engine as well. People assume it's a fork of FF14's engine, but nothing official.