I used the free trial to play championship manager 01/02 on my phone. While it worked and loaded the game... I wasn't a fan. If my phone screen locked I would lose my progress, had to constantly save. Had errors too.

Even if it worked properly I didn't think it was near worth the cost. If the guy had gone down the open source route I reckon he'd have had a far better end product by now.

Ultimately I'm sure there will be a product that does that in time.

Also while it may be useful to have access to something like this along with retropie, it shouldnt be him cashing in on retropies brand. That feels wrong on every level, especially when in my opinion his end product is nowhere near the level it needs to be.