With YouTube Im sure atleast someone will continue playing. The large amount of SRB2 videos on there combined with the fact you can easily find them by searching "sonic" on about any search engine, leads to a lot of people eventually seeing this game. Even if everyone decided to stop, I'm sure some random 7 year old kid will be on the internet and find it to play. SRB2 might not have a large amount of publicity, but atleast the places it is shown are things people use daily.