The correct way to rewrite the sentence is:
"His ranch is in Texas"
The possessive pronoun "his" replaced "My uncles".
Possessive pronouns are used to show possession or ownership within a sentence. They are used to refer to someone or something that was previously mentioned in a text. Using possessive pronouns brings about clarity by using fewer words in a text.
I think it depends on who makes more money. If I was a well paid doctor and my roommate was on the street selling rocks, I wouldn't mind paying the bills.