>>529259548
I think the Smash clone developers approach it incorrectly. Make something for the general audience that's fun and you'll have a percentage fanbase who gets gungho about the game and want to learn everything about it. If it's Player versus Player, they'll compete with each other and a competitive league will be born. Of course the gameplay has to be deep enough to keep people playing but it has to be easy enough and appealing for the general populace to get into.
I agree with what you're saying; targeting competitive Smash Bros players solely is not a sustainable market.