mucky,
the only company I am aware of that used to do sponsorships for helicopters was Bristows, but that was a few years ago.
Now I fear there are none. Compared to the huge infrastructure that most airlines have, few fling wing firms have the resources or finances to risk on training hopefuls up. Your best bet is either to heed the advice above and keep the hobby and the wife or find some way of raising the capital yourself.
The harsh reality is that unless you win the lottery or have a sugar daddy, the likes of you and I will have to do it the hard way paying for every step no matter how painful.
Sorry if I sound like the harbinger of doom, but I reckon I am just being practical and realistic.
Regards
Obs cop