It's a giant pain in the ass in the real world. I don't think we should accept such friction for switching providers online just because we have such limits in superficially similar operations.
Its not really just superficially similar, its incredibly similar. Its their servers, its their domain. If they want to stop hosting email services on their domain and delete gmail.com IN MX records they should be allowed to do so in line with whatever contractual promises they've made. If an apartment complex wants to shut down and tear down the building they can do so once they've completed all lease commitments.
What are you suggesting happen otherwise? Once you're an email provider you're forever committed to being an email provider for those users until the end of time?
Its not really just superficially similar, its incredibly similar. Its their servers, its their domain. If they want to stop hosting email services on their domain and delete gmail.com IN MX records they should be allowed to do so in line with whatever contractual promises they've made. If an apartment complex wants to shut down and tear down the building they can do so once they've completed all lease commitments.
What are you suggesting happen otherwise? Once you're an email provider you're forever committed to being an email provider for those users until the end of time?