Definitely, I think BTC will go a long way in terms of payment systems. Lightning network accounts for less expensive, faster transactions, and using BTC we can transact from anywhere to any place in the world, no matter how far, across any distances, and most importantly, according to me anyways, without any formalities that we have to face many times nowadays when encashing cheques in banks. I think, just a bit more of internet "universalization" in the developing and under developed countries, and bitcoin could work wonders as a global payment system.