> How though? There are only limited amounts of land to own, water to drink, desirable places to live ect. How can everyone simultaneously get rich.
If you define "get rich" as "own land" or "own water" or "own property in desirable place X" then yes, you can see it as zero-sum.
But if you define "get rich" as "accumulate money", then the economy it is not zero-sum. And one of the ways it is not zero-sum is fractional reserve banking. This allows the banks (who arguably are the originators of most of the loans being discussed here) to literally "create money out of thin air". For a bank to underwrite a loan to someone for $20,000 for a car, they don't have to wait for grandma's saving account to accumulate $20,000 in order to have the funds to make that loan. They only need (example) $2,000 to be "savings" in grandma's savings account in order to be able to underwrite a $20,000 loan to the person wanting to buy the car. The $18,000 difference was simply created by fiat out of thin air.
Which is how, if one defines "get rich" as "accumulate money", the economy is not zero-sum. In order for person X to gain 10,000 more dollars, person Y does not have to give up any dollars (unlike with land/water/housing/etc.).