They are all federated trust models. But they are federated models with no ability to inflate & no ability to target any single customer, & they can be small & run by a limited number of known entities with good reputations, & then networked via Lightning to other sidechains.

Drivechains on the other hand require massive miner particpation to be secure, no potentially malicious miner can be excluded, & it requires a change to the incentives on the base layer that could over time break the entire system.

There are a lot of people who don't seem to understand the sensitive dependence on initial conditions that is at play when you screw with things in a system like Bitcoin.