Most conflicts would start with coordinated strikes on known anti-air and anti-ship installations, unless these land based launchers are road-mobile and constantly on the move, they'll be quickly targeted.

A corvette at least has the chance to blend in with a few fishing trawlers and keep moving around to make itself harder to find and take out.

The ships have to live somewhere too. They are not submarines and I think they'd be sitting ducks. Mobile launch vehicles have a better chance of surviving a first strike and retaliating. Russia will likely sell their hypersonics to those that can afford them.

Taiwan doesn't need to protect strategic overseas assets. It doesn't need to go hunt a strike group. It needs to protect itself from invasion.

Ocean is big land is small.