> The main problem with font piracy
> is how easy it is to do.
That's true of any digital media these days. Granted, people were copying stuff long before the digital realm...audio cassetes, VCRs, photocopiers, etc.
> Until a solution to this basic problem is found
There isn't one and probably never will be. Anything that is digital can be copied. No amount of 'copy protection' will protect the physical act of pirating and will only piss off all of the honest users.
The solution we can use is called copyright law. It's not ideal, but it's what we have. If you truly are loosing a large amount of sales to a pirate, then you call up the lawyers and act. Yes, this favors the Adobes and RIAAs of the world...not the guy sitting in the basement making fonts.
I still stand behind my belief that the best solution is simply to cater to your honest consumers. Educate people on piracy issues the best you can, and hope that your product is good enough to encourage enough to purchase.
This is where the RIAA is failing. They are neither providing very good product these days, and they aren't even willing to let me purchase what I want (and, on top of that, they sue their own consumers). They need to learn a basic premise of capitalism...give the consumer what they want at a sellable price...not what you, as the vendor, wants.