A good start would be DX10 support for XP. But ultimately all that will come of this 'alliance' will simply be new vile copy protection schemes, which will serve to worsen the problem by putting out legit buyers while not stopping piracy.
Ultimately what will happen is a return to indie gaming.
Let's hope. The only 3-5 games I play right now are either TC/mods or indie. It's ironic to laud console gaming (no modding) for games like GH, when you can get it for free (in several flavors, without piracy, and with tons of add-ons and mods), on PC.