One might get lucky here but no great riches are likely to be had.
.net is quickly losing it's stigma as the unwanted stepchild. It is no longer strictly for internet applications, etc.
The name of the game in terms of enduser preferences is short, memorable, and dot com - IF you can afford it. If you can't afford, the same name in dot net is becoming a welcome option.
Premium and pronouceable LLLL.nets are a good long-term investment. They are not going to get any cheaper than they are now and in 1 - 5 years you should have a very nice ROI.