Because the government has put constraints on what kind of agreements are valid (especially in the domain of sales to consumers). It happens all the time acros

Because the government has put constraints on what kind of agreements are valid (especially in the domain of sales to consumers). It happens all the time across many domains (look up the Uniform Commercial Code, for more general examples, or laws around vehicle sales). I have less inclination to be involved in business to business transactions, but there’s absolutely a societal debate to be had around what laws and regulations we have on transactions of software. Society runs smoother, with more transactions, and this economic wealth, when consumers can assume a reasonable baseline of behavior that is being regulated by the government. If every purchase and every transaction requires deep due diligence there will be far fewer transactions.