PG: Would you consider funding a startup aiming to take on a massive but completely monopolized market, e.g. desktop OSes?  Being one of the developers on a completely new OS, I frequently wonder about how it could be commercialized and pitted against the likes of MS, and it seems that it would be effectively untouchable from a funding perspective, with the way things are now.<p>I know investors like risk, but it seems like the chances of success are such that 99% of the time, you're going to be throwing your money way.  Any insight here?