I’d be critical of this if it was about HP coming up with another new tablet system but it’s not. They’re simply entering the market and using an existing (compatible) and established system. Having quality choices like HP and Samsung in the android market is no different to having Lenovo, HP and Dell offering quality PC products in a market full of low-priced clones.
Businesses will pay more for the reputation and warranty that comes with a brand name device. As for the cloud, that’s a much more crowded market than the tablet one. HP would do well to stay clear of that.