In 1989 The GNU project introduced the GPL - not the first occurrence of a free software licence but arguably the most important. Yet today in 2012 we still have large sections of the computing industry which just doesn't get free software. I came across a glaring example of this today.
The content industries have conspicuously failed to create a business model based on paid content over public IP networks, but still cling to the idea that those networks were created for just that use. Any software or system which might interfere with this theoretical paid content business is considered not just heretical, but probably criminal. The music and movie consortia have turned the transition to network distribution into a “with us or against us” battleground, with most of their customers fighting for the wrong side.