Commercial perennial crops do not mean the end of seed companies.

Blog post on the subject Followed by a bit of interesting discussion.

Gist is that people can still license their plants, just like they can with trees, and that there are many ways to stay in business.

although i really love my perennials and self seeders I always end up buying some vegetable crops from annuals every year..I know it would be cheaper if I didn't..but I do.

I always have some extra room to be planting something and annuals fill that space nicely