People hate it if you take the free toys away, especially after they've started using them because they were useful and free and now have grown used to them. +

People hate it if you take the free toys away, especially after they've started using them because they were useful and free and now have grown used to them. + opinions about Docker are generally not universally positive, which doesn't help. It's not a niche thing only used by superfans, but something that has been promoted and pushed widely. Not everybody who uses it likes it, and it's more infrastructure than "cool tool".