Money in football

Players’ wages can be from 10 pounds a week to 250,000. The big question is where the money is and why is it there?
The three big countries in Europe where all the money is: England, Spain and Italy*. There is a star beside Italy as they have not kept up to England and Spain and there for falling back and are similar levels with the likes of Germany and France.
 I am Irish and the biggest team in our country is Shamrock rovers. At this moment they are competing in the Europa league. The current yearly wage bill of Shamrock rovers is about €1,000,000. Compare that to Chelsea who has a bill of about €180,000,000.
How are smaller teams like shamrock rovers expected to compete in big European torments when they have this big a difference of money.
Of course there is a percentage of how the works together but what is that percentage? What would you rather have a not great bunch of players who work well or the best players in the world with amazing facilities not working well as a team?
I’ll let you decide so please comment as I’d love to hear your thoughts! Thanks!