The real issue is that biology needs actual experiments done in the physical world, which isn't nice and orderly and well behaved and easily loadable onto a 19" rectangular box.

There is a lot of computational chemistry and biology done in the early stages of research - there are now multiple orders of magnitude of computation power available that is doing nothing but feeding forward on billions of random numbers.

On the other hand, AI means actual experiments done in the physical world but coordinated by an entity that never sleeps and never gets depressed and can multiply itself manifold and always comes up with new ideas.