While projects like this might hit their modest targets initially, they're totally doomed in the long term.

If 1% of users can get around it with highly technical trickery, it's not going to be long before one of those 1% packages the workaround up into a nice one-click piece of software that everyone can use. Just look at CSS. It only took one DVD-Jon to figure it out and now CSS is effectively useless.

That's why I think lots of people argue that it's either 100% or don't-bother.