RIM co-CEO Jim Balsille publicly stated that email was not a core component that its customers wanted on the PlayBook. We all knew that was hogwash, but now the real reason has come out.

[ad#Google Adsense 300×250 in story]It turns out that RIM couldn’t have included email on the PlayBook if it wanted to — I maintain that they would want to if they could. Quoting a source who is a director of product management at RIM, Business Insider claims the BlackBerry email system can’t handle more than one user at a time.

When the BlackBerry email system was built, there were no thoughts of tablets, so the concept on a user wanting more than one login never occurred to RIM.

“So now it has significant work to make the BES support multiple devices,” according to the source.

I still maintain that RIM should have seen this coming at least a few years ago and could have planned ahead instead of stumbling around like they have been for the past year or so.