I don't see this as an attempt to kill off their self-hosted offering. They charge the same as their SaaS version with some slight differences in features/limits (limits being removed as they're offloaded to your infrastructure.) The self-hosted version should in theory have a better profit margin than their SaaS version. Seems like the Gitlab Dedicated offering is probably just their self-hosted version automated and hosted on Gitlab infrastructure. Appears the demand was there and it probably wasn't much extra work to make it happen so why not.