This situation is unique and bizarre.
If someone was offering me handfuls of cash for a product in the state that it is in currently, then I don't understand the reasoning behind not accepting it.
Everyone is busy but if it takes over a year to get your business in order, then you obviously either don't want or possibly even need the cash.
A year to release Keyfiles is more than enough time, and a developer who is so blase about their own product would have no one to blame but themselves if potential customers resort to piracy to get full functionality.
Incidentaly, it seems strange that the customer - vendor relationship here has been reversed. There are customers practically begging to pay for a product and an owner who won't let them.
It may be their right to do with what they want with their own software but it kind of smacks of a power trip to be perpetually saying 'you can have it, but not just yet (and we're not going to tell you when either)'.
The main thing is to be appreciative and support the guys who are still actively working and supporting the products we want and are using, if they're not doing that, then maybe its time they (and we) moved on to other things.
One of the most interesting things here is that it was mentioned earlier that the iBrowse team 'may' only sell a few hundred copies of their software worldwide.
A conservative estimate could be about 150-200 users 'worldwide' who would pay the asking 50 euros. (It is old software, so maybe discounting it to 20 euros is realistic and may generate more sales).
That still means earning 3000-4000 euros for setting up a method of payment and distribution of keyfiles for software already in existence.
I don't know about you but that sounds feasible and possible, and not a pile of cash to be sneezed at.