Not really worried about heat death, we're (the human race) won't be around when it happens anyways.
"Up against concerns over the global cooling crisis, researches are finding ways to utilize our abundant oil reserves to slow the inevitable heat death of our planet."
And here's the code:
Times change and now the majority of users think email only comes from hot/gmail and their work. ISPs don't have any reason to cater to those who want their own email unless they pay up.