I'm all for subsidies to accelerate an emerging market or technology, especially if it's "the future", but for 5-10 years at most, until it becomes mature enough to handle itself. Subsidizing highly profitable companies for a century is beyond stupid, because it also means those companies can be a lot more wasteful, knowing the taxpayers will cover the difference.
I'd ask for an end to Middle East oil-wars, too, but that seems even less likely to happen, so I'll happily take the ending of subsidies for now.