Care to provide examples?
Fundamentally, yes, what you run in a CI pipeline can run locally.
That's doesn't mean it should.
Because if we follow this line of thought, then datacenters are useless. Most people could perfectly host their services locally.
> Because if we follow this line of thought, then datacenters are useless. Most people could perfectly host their services locally.
There are a rather lot of people who do argue that? Like, I actually agree that non-local CI is useful, but this is a poor argument for it.