Perhaps the biggest reason that wind is mostly offshore these days is because it's much more reliable there than on land. It still varies, but not by as much as you'd expect.

There's also a saying "the wind is always blowing somewhere". A good grid reduces variability a lot.

Renewables are projected to get cheap enough that over provisioning can handle most, (but not all) of the stalls, drastically reducing the need for storage or peakers. For example, if you have enough solar to provide 3X as much power as you need on a sunny day, you get about 1X on a cloudy day.

Over-provisioning results in incredibly cheap power on sunny/windy days which can be a huge boon to industry.