Honestly it's less time than ever but it's still time in an era where convenience is taking over and younger generations are less tech literate. It's like Netflix V piracy in many regards. Example, let's say I wanna play something obscure like congo bongo or Bruce Lee from C64 that's a pain to configure and if I change platforms the state saves are gone, ect. A solution like this could make it stupid easy and you could be gaming on your TV like in decades past. I'm not a fan of streaming but I imagine an arcade that preserves these niche titles is going to be easier solution for most rather than whipping about a raspberry PI or PC and for me especially keeping my progress on these titles is useful when they don't have save systems.

You forgot about the “best” part. Playing around with config files, only to have something break and have to delete and restart.