In your post there is much good and hope, but unfortunately not everything is so simple. If the regulator in any country prohibits the use of crypto currency, the merchants will not be able to accept it as a form of payment. To my regret, I do not see the prerequisites of globalization crypto currencies in the whole world, as long as there is a classical banking system.
For the coming years bitcoin will surely immerse to globalization for future generation. As the development of the global market continous to grow ,I think for the coming years the existense crypto currency will dominate.
Cryptocurrency is already dominant right now, the market price have gone to $1k dollars and it keeps on growing even more which means that there is a huge chance for crytpocurrency to have a bright future.