It's probably a matter of sustainability. Traffic along the coast is already a nightmare. You would need to make massive upgrades to public transit, water, electricity, sewage, road improvements to mitigate traffic and noise...
High density developments put enormous strains on our resources and would require enormous amounts of planning which is very expensive. It's funny how people on this forum think it's all as simple as just plopping down a bunch of skyscrapers like you would in a video game.
High density developments put enormous strains on our resources and would require enormous amounts of planning which is very expensive. It's funny how people on this forum think it's all as simple as just plopping down a bunch of skyscrapers like you would in a video game.