Leaders in the email security space have been seeing this for a while now [0], this is not new. The problem is the means to protect consumer mailboxes outside of Gmail, isn't cost effective since most people do not actually pay for their consumer mailbox and the impacts of compromised accounts do not actually impact the providers. It is going to be interesting to see how this plays out in the consumer space as the complexity of the problem continues to grow while the technology used to stop it stays in the early-2010s.
I agree, and I think the answer is that what used to be free, and is now infected with all sorts of enshittification, will be paid-for to be useful.
I pay for email via Fastmail, don't really have a spam problem. I think this addresses your point above, that to have an effective spam filter takes money, and free email doesn't generate money.
I pay for search via Kagi, don't see all those crappy Google Ads and actually get useful search.
I can see the other services (socials, messaging) moving to a paid model to solve the same issues.
[0] https://siliconangle.com/2023/12/19/new-report-warns-rise-ai...