Nokia's Eseries devices definitely are business oriented, and they now come with N-Gage preinstalled as standard (except the E71/E72 because there's no landscape QVGA N-Gage client).

I think someone somewhere has got their wires crossed if they think that Nokia doesn't publish games on business devices. Alternatively they might just have out of date information, because N-Gage came to Eseries relatively recently.