It's a business decision, not a public service. HP decided that the best way to maintain market share, and presumably profitability, was to serve every market that they can. In a way, they have to because it is an incredibly competitive marketplace for them.

Personally, I can deal with any given vendor offering less choice because there are other vendors to choose from. If you want a big name, there's companies like Acer, Asus, Dell, HP, Lenovo, and Toshiba. I am not stuck with a single supplier. The same goes for Windows 8 tablets.