That's extreme, do you anticipate there really be enough work to maintain IceWM every single working day?
No, I anticipate there being enough work that I can't get it done and work 70 hours at my day job too. Let's say it only takes me four months of highly concentrated effort to get everything up to date and humming along, after which future maintenance will be much easier to manage. All I have to do is take four months off from my day job, which means I give up my seniority, my vacation pay, my sick pay, my experience pay, my bonuses, my health insurance, and I start over from square one four months from now when they rehire me. If they rehire me.
I'd like to do this badly enough to make some huge personal sacrifices, but one full year paid up front is the least I'll take in order to gamble everything and trade away all the benefits of staying with my nose to the corporate grindstone.
Indeed, if I could pull together multiple projects, everybody could pay less. Too many projects, and I can't get the work done though. Financing for such things is extremely unpredictable too, and I might get paid this year and never get paid again, so I have to go off and hunt up some other project to work on.
Hunting work takes time too. All in all, I'll just keep my day job until somebody meets my price. This means I will be keeping my day job in perpetuity, unfortunately for me, and unfortunately for all the FOSS I could have worked on, had I but time. Oh well.
This is why it's impossible to pay somebody to work on your pet FOSS project, unless you have deep pockets, or a gigantic base of users with shallow pockets and the will to empty them. The best way to get FOSS done is to go do it yourself, and do it for free, out of love. If you can't code, and you can't pay, then you're just shit out of luck. Incidentally, while obviously somewhat over-valued, Ohloh.net lists IceWM as having an estimated commercial development cost of about $2,000,000 USD. $40,000 is jack shit. It's not even one real salary for a developer.