>> IMHO, the problem started when we all jumped on Gmail, knowing that there was no support
Back when Gmail was invite-only, most people used Hotmail or Yahoo Mail, which would offer a base level of (I think) about 50-100MB of storage at the time. If you wanted more storage; you'd have to pay for your email service - an idea I don't think anyone born past 2000 has even heard of.
Gmail came along, and suddenly offers us 1 GB of free storage, for free. This was around a quarter the size of some people's hard drives at this point.
Of course we didn't care if there was no support!
Are you kidding? I don't think Hotmail had support, either - (maybe I'm wrong?) - even if you paid for it; but here Google was offering a substantial value for anyone using any other existing mainstream email service, immediately.
They even had STMP and IMAP support, meaning you could use whatever client you preferred. Back in the day most people used computer-side email clients and had local backups of emails anyway - so if one went missing from Google's side it wouldn't be so bad.
There's a reason Gmail is still one of Google's strongest and unusually longest-lasting product of Google's. There's less reason now - but my God, when it was introduced it was an honest-to-God mindfuck as to how they were offering such a large amount of space and features for nothing.