Quote: "Yes but they are mostly quite expensive to use requiring extra or altered hardware, paid subscription services or an additional PC to develop on. They are often 'very' unofficial too (sometimes infringing copyright or IP laws, as well as breaking your warranty), and its often difficult or impossible to share your creations with others who do not also have the same modifications/subscriptions."
Well surely you'd require an additional PC to develop on for PS3 homebrew? While it's technically feasible that they might create dev tools on the PS3 for the PS3, it would be at quite a massive disadvantage compared to developing on the PC (what with all the tools, utilities, dev environments, debuggers, etc).
If you're wanting to advocate the use of a PS3 as a Dev
alternative to a PC for those people considering buying one or the other, then I'm afraid I would most definitely cast my vote on the side of the PC.
If your hope is that Sony will legitimitise the creation of non-liscenced (as in, free) software for their console, then I'll go out on a limb and suggest that as long as Sony are making a loss on the core hardware, then they have very little to gain in the short term from encouraging such activities, and quite a lot to lose. (Arguements about a proliferation of a free and creative software resources resulting in more devs for your console notwithstanding).
Microsoft have gone the middle and cautious route - they advocate and encourage amature (and independant) development, while gaining a bit of revenue back, and restricting the distribution of rubbish noise, but the opportunity to cherry pick the good ones.
People can plug PCs into tellies, if they choose. Those people who are technologically advanced enough to do that, are probably the same ones who could seek out and download independant software for a linux-booted PS3. Your average punter turns to the console for great games with no effort involved in setup. That's the majority of the console market at the moment, and selling a PS3 to the technological 'elite', and the high definition audio-visual cutting edge crowd, is not really that big a market, all things considered.
I my core worry, is that as a games machine - a pure and simple games machine - the PS3 is unfortunately a box of potential with not much yet to show.