Multi-platform, it depends. One good side about multi-platform is that
everyone can go online and play together without boundaries. Not like currently, PS3 can link with PS3, Wii with Wii and Xbox with Xbox while PC only with PC.
Imagine a day, everyone on different platform can play MMORPG either on the console or PC or handheld and imagine how large the community will be. I do believe there is a few gaming companies trying to stride along this line. I read it somewhere few months back but can't recall which company.
Other than that, console have its advantage and PC also does. FPS games should stick to PC, unless a combo keyboard mouse can be used on a console but people will complain that keyboard mouse combo will have better accuracy, which I can prove wrong as I have friends who play using joypad COD4 while I was on keyboard mouse, are better. It all depends on skill, not just hardware.
On the issue of piracy, well, PC does have its downside for having the most pirated stuff, while hey, open source isn't far off either. If softwares are cheaper and affordable, everyone will not mind buying originals. I mean, games I do believe most of us buy for pleasure play aside from for the sake of playing it then chuck it away after we're done (this is non-originals) while for original owners, we tend to replay the games, looking out for extra hidden stuff (FAQ anyone? And those who wrote them.) to maximize out the price we're paying for. Software wise, well, if its good and cheap, who will not buy it? Besides, we do use it often. Best example would be Kaspersky. Cheap and affordable.
Wow, this is long. Anyway, just my opinion.
PS: I have more open source running on my PC, aside from bloody WinXP. Linux anyone?
Yeah, that implies when we get 5 TB/PS internet SCREAMIX connection.