Build a product worth purchasing.

Most unsolicited telemarketing is inefficient--and that means a high cost of making the sale, which means whatever they are offering is either too expensive, too low quality, or an outright scam.

Does there have to be a alternative? Companies preying on the elderly and uninformed is not something we necessarily need as a society. (99% of my telemarketing calls are scams where they pretend to represent my current power company to get me to sign a contract with a different company).

There does not need to be an alternative. It just needs to stop.

Wasting the telemarketers' time

selling fentanyl works pretty well too from a business perspective

Annoying tons of people so some small percent buys your stuff is a shitty thing to do. Their winning more than they lose from being shitty isn't something we have to offer an alternative to.