Do you think you would play more or less Runescape than you do now if you had 200 million experience in every single stat?
Evidently it would be equally not hard to earn money because you could mine rune, craft double nature runes, do Godwars, anything like that. Nevertheless , it would be very boring that the only thing to do would be to stock items, basically money. There would be no stops in between to fletch a few thousand xp, no logic to charge in castle wars and no logic to do almost any skills, apart from earning money.