For many reasons the ban was put into effect Mostly because of TOURS in large groups taking up too much road space on a confined route. Ebike rentals on the whole island would give a tourist choices of routes and hills would be no problem to ride up without having to trailer the bikes anywhere.
The politics of the downhill bike companies did have much to do with making ebikes illegal so what a shame it will turn against them.
Where there is a void somthing else will try to fill it... Its called business!