TheYanks have more than enough people to cover their shortage, it’s the training that takes time. Remember this shortage is temporary, so there’s no need to give any visa specifically for pilots.
As for EU, well we will never see such an increase. Maybe the AF/KLM or Lufti might up their pay a bit but as far as everyone else you can forget it. We have a massive surplus of pilots and the EU is not 1 country, it might be a single market but with so many countries with different labour laws and economies it practically makes it impossible. Plus there’s the low cost issue, our aviation sector is dominated by Ryanair/Wizzair and Easyjet so they lead the way in terms of pilot pay and the rest are just gonna follow.
So if you want anything close to what the Yanks are getting make sure you get in to AF/KLM, Lufti or maybe BA. For everything else expect some serious deterioration of remuneration packages in the next coming years.
It is what it is.