Some guys kick around a bag of air.
Every 4 years a group of them get together in a chosen country to see who can kick it around the best.
The chosen country can make a lot of money from related business deals.
A lot of companies can make a lot of money from related business deals. (Building stadiums, infrastructure, finance, etc.)
A lot of individuals within those companies can make a lot of money.
The country is chosen by voting.
Some of the guys with interest in the business deals have (allegedly) bribed some of the voters to influence which country gets to host air bag kicking.
This, if true, would give them massive advantage in the related business deals and other business related to the related business deals... as the ripples spread..
The people arrested are at the very top of the world governing body and are alleged to be totally corrupt. By implication this makes the Governing Body itself untenable as it currently stands.