* highly educated
Universities are not very good.
* and english speaking
Don't they speak Portuguese?
*youth and a will to conquer the world.
Unlikely. And Silicon Valley is not about guys with laptops creating some websites. It is all about high tech, top universities, supply chains and synergy effects. You may be able to to a technology heavy start-up in the UK, Germany, China, Japan, Korea but in Portugal this is difficult. You lack the industrial supply chain of customized high tech products. Just working on your laptop you can also do in Kenya (which actually is quite innovative in IT).
Portugal is a nice place. Nice people. But too little high tech, too much debt, demography problems etc.
" destruction created by more than 50 years of fascist dictatorship." Not aware how much damage this created. The Portuguese empire was not important before the dictatorship anymore, so not sure how much time you really lost.
But PT has many good things. I wish RE was cheaper in Lisbon and I would buy immediately.