Not hard to believe
It's not hard to believe they're slipping based upon my experience this past 10 days. I needed to order 8 new servers on short-ish notice, so naturally contacted Dell and HP (amongst others). Dell promised us the world and we ordered with them, but have failed to meet any of their promises so far and have been repeatedly caught out lying. By far the worst sales experience I've ever had (and continue to have, in fact). That said, HP didn't even respond repeated requests for a quote, so I don't know which is worse.