Not in the sense you are. We have raised riws, but only 20~30 cm. I agree raised beds are wonderful, but the costs would be too high for us to make them.
They wont stop them though. We find snails on 3rd and 4rh floors here eating the concrete.
I would think in Hokkaido its less sever due to colder temps. My only snail issue is with african land snails. Those things are somethun else. All the small native ones i can live with their damage is minimal.
This is what hate looks like:
