Palantir's biggest problem: valuation.Palantir Technologies (PLTR +3.42%) has soared more than 2,000% over the past three years, driving its valuation to unbelievable levels, and this is thanks to the company's ability to do something very important: Palantir is helping customers immediately put artificial intelligence (AI) to work for them.This tech company makes software platforms that aggregate and analyze a customer's data, and its AI-driven system, simply called Artificial Intelligence Platform (AIP) h ...