It's been true for the last 43 years (4 decades already! so much for the people you thought were in the know), and it may stop or slow eventually, but probably not any time soon... besides they could always start doing multiple layers on a chip and design 3d chips, not to mention new areas such as:
http://news.cnet.com/8301-10787_3-10096966-60.html
No offense to your professor, but this is what intel was saying 5 years ago:
http://news.cnet.com/2100-1001-984051.html
Which basically said they were covered for at least decade and expected to have ideas for the next step prior to that decade passing.








