Article from 2012 but informative about seed companies bought by a Monsanto affiliate and then extricating themselves:

https://nwedible.com/a-brief-history-of-monsanto-and-seed-houses-who-got-screwed/

what really happened

Territorial, Johnny’s, Fedco and most other seed houses had an established relationship with a company called Seminis. Seminis was a dominant, well-regarded independent seed company specializing in vegetable and fruit seed. They were (and remain) huge – breeding, trialed and growing out more vegetable seed than anyone else in the world. And a lot of these seeds were for vegetables varieties you probably love: golden acre cabbage, gypsy pepper, celebrity tomatoes – we’re talking quality varietals.

Monsanto bought Seminis in 2005 and left a lot of good seed houses in the awkward position of having to either find immediate alternate seed sources for the seeds Seminis was providing (which is many cases didn’t exist because Seminis was so much larger than any other seed grower) or do business with what was now, overnight, a Monsanto subsidiary.

Some companies, like Fedco, dropped all Seminis/Monsanto varieties more of less immediately. This left gaps in their seed offerings but their customer base was very supportive. (See more here.)

Many, like Territorial and Johnny’s, began to phase out their relationship with Seminis, maintaining their product inventory while beginning to seek out new seed sources that would allow them to divest of their Monsanto relationship. (See more here.)