In researching, this is what I've found.

While researching numbers in owning a NFL team, I found out that many teams are now worth atleast 1000 million dollars, which is a billion. Even the Chicago Bears, bought for a hundred dollars, is worth about $1.2 Billion. Imagine, George Halas bought the Bears for 100 dollars almost 100 years ago, and they are now worth 1.2 Billion. How much money do you think the Halas family now has. For me to own a team, I'd have to be basically, filthy rich now, but I can get even more rich off of owning the team. You have to spend money to earn money, basically.

Update to my 20% time

So far found out that some teams can cause  extremely high. Two teams in the NFL are more than 1000 million, give or take a few. Some teams sell regular seat tickets for $60+. The Patriots ticket prices are the highest, how ironic. Now, most owners that started owning a team recently have the highest prices to pay. In 1920, The Chicago Bears was bought by George Halas for about a one hundred dollars.. Also when you buy a team, you have to get them out of depth by sometimes billions of dollars.

For my 20% time, I will be taking over as a coach for the New England Patriots. They are already a good team, but I will have to manage them, and keep them good, financially and of course, winning. I will have to set prices, manage them, control the rosters, and all kinds of different things.