Most people wouldn't and millions of the cds are sold from the most popular bands (world best is subjective). When it comes to live most people would pay 10x times more to sit 100x further away to see world class vs a cover band playing the same music.

This is going to push us back to making our own music like we use to. Singing/playing should be a fun group activity rather a performance given to a group of non performers. We are all artists.

I mean the whole concept of "world's best" in terms of art doesn't even make sense. It rarely, if ever, makes sense in other areas or fields as well. (even sports, where it is is sometimes objective, records and acheivements are broken all the time again and again)