The paradise one has most notable first party titles removed and even some 3rd party ones like the SNES Street Fighter titles removed.
I get that they're protecting their intellectual property and have every right to, but aside from virtual console (which a lot of titles aren't on) they're not going to make any money off of.
If they had some sort of digital download service where you could buy ROMs for personal use (outside of virtual console, like buy ANY game worth playing) and charged less than VC prices then they'd actually make some money. There wouldn't be as much of a reason to pirate if you could buy NES and SNES games for like $1 or $2. Of course this would also be terrible for used game stores.