If Monero (or any altcoin) wants a monero.bitcointalk.org subdomain, its supporters must donate 10 BTC to Thermos.
10 BTC only, really? That's peanuts for such a big contribution from BTCT. AFAIK the forum doesn't need the money, so I don't see why the administration would want to do this.
As Lauda said, it's no good to set a precedent for creating a section per altcoin. Then we'd need thousands of altcoin sections.
Thousands? No.
Very few coins rise to the level of having a significant community or have any lasting significance (most are effectively dead within a few months at most). How many have their own stackexchange? How many have the level of traffic and subscribers on their subreddits? How many are still in active development after 2.5 years?
If the coin has a significant community then they can surely move to a dedicated forum for that coin. I disagree with the expansion towards this direction in general.
Is this a new business model for bitcointalk.org or an established one?
It is not established, there are not altcoin subdomains.
A cryptonote dedicated sub forum would be nice to see
No.