I worked at a non-AOL ISP as tech support back in the day and still have the occasional flashback to having to talk folks through uninstalling the custom TCP/IP stack the “Try AOL” CDs would install.
My greatest win was to add a few lines to our RADIUS server to flip case one time on bad logins, so if 'mYpASSWORD123' failed it would try 'MyPassword123' and let them in if it worked. Logs showed thousands of fixed logins per month and reduced tech support calls to less than a third. We declared victory over CAPSLOCK.