I think the article hit on exactly the reason why Diablo 3 will NOT appear on consoles. Blizzard has a long track record of patching its games to rebalance them, and "free patches" are anathema to XBL and PSN.
Diablo 3 on console would be another Team Fortress 2: what you get on launch day is all you'll ever get. No bugfixes, no upgrades, no buffs or nerfs. I don't think Blizzard will go for that.