I think taxpayers will gladly pony up as they see results, and this idea of Katrina Math actually being offered to adults makes sense. Why should just kids benefit from property taxes or whatever the source of revenue, if it's public. I've mentioned about NALB before.
Once more adults become involved, it's hypothetically possible that the education sector will account for relatively *more* total public spending than it does now, in both absolute terms, and as a relative percentage.
But we won't get there from here if the taxpayers feel dragged into the future, kicking and screaming. The revolt, against the currently low expectations of our public education system, should be taxpayer-led. Let's insist on getting our money's worth. That will include spreading literacy -- including computer literarcy -- to more adults.