Why don't companies implement 2FA via a Non-VoIP sim to strengthen regional payment verification?

A lot of online services and goods aren't adjusted to regional pricing because people can easily use VPN and change to country with the lowest price. I think the said verification will prevent almost any such type of purchase. Why? Because Non-VoIP numbers are tied to physical sim only and it is very hard to fake them. Usually, you have to pay for a service to do that when in fact you can pay that much on the original service …

2fa companies cybersecurity don non payment sim voip