breaking a contract isn’t stealing.
We have plenty of laws that make illegal all sorts of stuff, like larceny, larceny by trick, robbery, embezzlement, burglary, etc. None of those include breaking a contract.
The idea that it is stealing to break a contract is lunacy, and would violate the 13th amendment which prohibits slavery. If I make a contract to paint your house, and then my son is getting married that day–I am forced to paint your house anyway? No, I break the contract, you sue me, and I pay damages if any. But that’s a civil suit–not a criminal action!!