Never.
They have designed and implemented everything to make the league fair, balanced, and a close to a perfect meritocracy as possible.
If City so happens to come in with money and the best manager in football and begin to dominate the league every season, they’ll applaud our achievement, not try to implement rules to curtail investment in our club, protect rival cash cow clubs, or influence match outcomes to increase competitiveness, fan entertainment, and advertising/sponsorship revenue.
You are just paranoid!