80's or 90's playlist that plays ALL hits, possible?

[mmurphy69]

Curious why most steaming music sites don't play all top 40 or top 100 songs of the 80's or 90's and shuffle those?   Your 80's/90's are SOO repeatitive it make me wonder why, when you can simply shuffle 400 songs (top 40 from 80-89) or 1000 songs until it repeats.   Or is this a license issue or being blocked from playing certain songs.   Please advise.   I love streaming music but tired of repeats.