I agree that it is well within their rights to do that. But I also feel that this is a reason why large software products are not inherently a great fit for the

I agree that it is well within their rights to do that. But I also feel that this is a reason why large software products are not inherently a great fit for the Kickstarter model. I think Steam's "early-access" model is a much more intuitive fit for both the developers and the consumers of these games.