I can't imagine getting my boss to pay for something like TIBCO. That would require quite a sales job.
With one exception, the developers I know wouldn't even use Camel. They tend to reinvent the wheel. But they do use Spring and a few even use Spring Integration. In order to commit to something like Camel, you have to experience the "ah-ha" moment when you realize that Camel makes things easier, like the REST DSL. That of course requires actually using Camel. Being free is a big win for learning. Expensive products won't die completely, but new developers won't bother with them.
