Square Epic seem to have proven that you can make full-priced games work on mobile. Sony are always looking for new outlets for their business model; why not port many of these titles to mobile as well? At a tenner each they'd give great value for money.

I've been using the PPSSPP emulator on Android for years to play backups of all my PSN and PS1 purchase and games like Locoroco, Front Mission 3, Ridge Racers and Metal Gear Ac!d work incredibly well on phones.