But there IS evidence that students are able to graduate quicker from universities, because the curriculum became easier.
Average students in the Netherlands (at a polytech university) used to need about 6-7 years to graduate. This was fine, since studying wasn't expensive. Now, our government doesn't want to pay for those "lazy" students anymore, and they need to graduate in 5 years. Also, the universities are paid for each diploma they hand out, so they have an incentive to make sure everybody graduates. Finally, it is also financially interesting to attract Asian students, but these want to be able to graduate from their Masters in 2 years, which only 10 years ago was practically impossible. The masters was officially 2 years, but almost always took longer to finish.
The result is really that it became easier to get a technical diploma. People enter the job market with less experience. Companies need to invest more to train their technical people.