Yes and no. Yes, an eSIM can contain several profiles from different operators. But only one profile is active at a time.
There is typically a default bootstrap profile, to provide just enough connectivity to get started and choose your actual operator. And then this operator profile will be installed too. But the system is more generic, and could store more profiles. At least in theory, in practice there is a cost to generating a profile so this is only done if there is a real need.
There is typically a default bootstrap profile, to provide just enough connectivity to get started and choose your actual operator. And then this operator profile will be installed too. But the system is more generic, and could store more profiles. At least in theory, in practice there is a cost to generating a profile so this is only done if there is a real need.