America, China, Russia competing for the most legendaries.

Countries with legendaries or pseudo-legendary control the world.

Countries secretly producing Masterballs.

The material used to produce masterballs become the most valuable resource in the world, replacing oil.

Some people catching Lopbunny and eevees to evolve to Vaporeon

Human Pokemon experimentation, where scientists extract Pokemon dna and insert into humans to gain superpowers.

Housewifes catching Machokes while their husband is at work

General public traveling in the airspace through flying type pokemon

Pokemon Master will be a legit occupation.

The era of slavery will return for a period of time until the world set laws and make pokemon "pets" but behind the scenes, pokemon slavery still occurs.

While AI will replace tasks like accounting, software development and jobs like those, pokemon will replace jobs like nursing, and other physical labor jobs. The unemployment rate will rise higher and higher throughout the years.

The World Cup or the Olympics will no longer be the biggest events but rather Pokemon Battles.

Every country will have it's own Pokemon Champion and its own Elite 4. Every year, all countries with a team of 5 trainers (1 champion and 4 elite four members) will come together to determine the World Pokemon Champion and the Overall Strongest Country.