Lightning is now running in Beta and will later in 2018 fix the high transaction cost problem. But I wonder how Jack comes to this very strong conclusion? It

Lightning is now running in Beta and will later in 2018 fix the high transaction cost problem. But I wonder how Jack comes to this very strong conclusion? It took two world wars first to slowly dethrone the British Pound Sterling and than to push the USA Dollar down everyone's throat, with the help of the Marshall plan and the Saudi oil deal (we protect you, and you sell oil only in $ denominated contracts). What similar strong reasons are there to think Bitcoin is going to grow this strong?