The Kickstarter is just a tool to reduce (or eliminate) risk. You can certainly argue that they should be big enough now to make these decisions/risks themselves. But if that was the case and they (eg) made a bad decision to splurge $500,000 on licencing LOTR (including all actors and so on), then promptly made a loss that eventually caused them to fold. That would be dumb.
So they play it smart. Kickstart these expensive licences. If the kickstarter suceeds, then go ahead with it. If not, then don't. No risk, no problem.
I'm a huge fan of kickstarter projects and would have no major issue for it being a general trend in other aspects of consumerism. Eg, if Pink Floyd said "we're thinking of doing an album. Pay us £1 million please fans". The band get their money. The fans that forked out in the kickstarter get some limited edition physical copies or something, and the world gets a free downloadable copy (because why not, it's all paid for right?)