A YouTube Commenter suggests it was due to Assembly Bill 5, which Wikipedia says is:
California Assembly Bill 5 or AB 5 is a California law which limits the use of classifying workers as independent contractors rather than employees by companies in the state.
Whether or not 5 had anything to do with this, it’s been obvious to me all along that it wasn’t an arrangement that could last. People who did it should have come in knowing that and just be glad for the extra bucks they could suddenly earn. If 5 was the cause of this, it should spread to other Spin locations in California.
When these companies finally enter NY State, I’d be very surprised if they didn’t rely on permanent employees instead of gig workers.