Are sociology and economy just the same thing? Why are they separated?

I often see people discuss about social system and politics in an very excited manner. I am confused as in my opinion everything is just related to game theory. Sometimes under some circumstances people will join force, while other people will fight each other.

If there is a way to measure every person's utility from a statistical perspective, i think sociology is just an extension of economy (or vice versa). Is there existing studies that use real numbers to do this? Empirical studies as i hate those economic theories with tons of formulas and ends up incompatible with what really happens.

Everyone's attention/ emotions can be valued as utility and hence, money. I think that can link economy to sociology and let we understand social system and culture better.