In Belgium we do have e-ID and we had it for years.
If in any of the circles there is only BigTech then indeed you are right it is a threat.
In Belgium though I can access my official document with some of these (honestly I don't remember which, but AFAIR It'sMe is one option) but more importantly there are some options with some decoupling, e.g. SMS (arguable as one must have a phone number usually via BigTelco) but, last and not least :
- a card reader with your physical ID card and its chip with https://eid.belgium.be/en/what-eid which has had Linux packages for years
- just learned about it yesterday which is why I'm excited to clarify this, a 2-step authentification app which does NOT have to be from BigTech, e.g. Ente Auth https://ente.io/auth/ which is FOSS and available on F-Droid
which means as long as at least one of these alternative is available then IMHO we can get some of the benefits without the centralization risk.