Yea know the ironic part of this, is in most cases anyone whom would use the older CS2 likely would never be a paying customer anyway.
IMO Adobe is going about this all wrong. I've been a gamer almost all my life and as a hobby I've messed around doing 3d and working on mods to games from time to time. At one point I started to get into the gaming industry but ended up not doing it.
Over the years I've seen quite a few teens start learning how to do 3d and use photoshop to work on game mods. Some of these guys became quite good and I've seen more than a few of them get hired by game studios.
These are guys that used to make free skins for long gone sites such as CS-Skins.net and various other game modding sites.
Of course these kids didn't have legit versions of photoshop or 3d studio max nor would they ever been able to afford it, just to make things for game mods. Yet still they used pirated software and many eventually became professionals working legitimity with-in the gaming industry. I'd almost be willing to be that the bulk of game artist in that industry started out using pirated software and doing it as a hobby.
Adobe should actually allow and encourage the use of older obsolete versions like this because they have the ability to create future customers by doing so.
It's not like they would be losing many sales by allowing the use of their older versions.