In peach, the limited is mandated by swiss gov.
In robosats it's decided by each instancen(now that it's federated). They mostly decide to pick low limits because they probably don't want to resolve big disputes.
Discussion
Exactly my point. The limit exists because they figure it will hinder you from using bitcoin seriously, and registering a legal entity in Switzerland allows them to enforce that.
Robosats is at least cheap and easy to do a few buys at at time (and has a model that doesn't bow to government)
Yet they still pick comparably low limits...