I have, and I've helped several companies move away from it with no negative impact on business and a HUGE savings. But in a lot it's a flex, a demand from an exec or board member who wants to tell people they're on Salesforce. Seriously. I had one COO tell me, "but then I can't tell [prospective acquisitions] we're on Salesforce." I said, "true, but they don't care about that, they're seemly impressed because it's expensive, not because they think it's the best tool. You could save that money as profit." He blinked and the conversation was over.