Once it will be understood, losing xx-years accounts wouldn't be a problem.
I know this is controversial idea, but the more I see cases like that, the more I am sure about it
Problem is the "society" around us (for lack of a better word) treats IT services as something reliable, see how more and more countries go digital/electronic only when it comes to payments or relationship with the government.
Until everyone can agree on a better system, your e-mail is your online identity across countless websites. This makes losing your e-mail (with no customer support to regain access) a huge vulnerability in everyone's personal life.
I would go even further and demand regulators to define standards to enable migration or self hosting.