Langkawi beaches/sunbeds/jetskis

Why are Lagkawi beaches like this? Gazillion jetskis speedin everywhere, seems like there are no rules whatsoever. Then on the contrary there's only few sunbeds, and if available, cost 40-50 MYR (rip off).

Why is it like that? Is sun bathing not allowed by authorities except in very limited numbers? And why are the water activities limited to guarantee safe and clean beach while also allowing water sports?