No Calls

This only works if your sales strategy is all about inbound sales, i.e. content marketing (like this article)/ads.

But if you're an enterprise b2b company and want to grow quickly rather than taking 8 years to go beyond 1 solopreneur like this guy you're going to want to do outbound sales.

It's also worth noting that this guys is mostly doing small deals. The literal largest price he has on his pricing page is 72k/yr, which isn't tiny, but his typical deal size is likely much smaller, so it makes total sense for him not to get on a call for $49/month, because that is not a scalable strategy.

But many enterprise b2b companies have a more complicated product than Keygen and charge orders of magnitude more than they do.

Which is not to say that he is wrong, it's just that this is the correct strategy for scaling a low ACV product, rather than a high ACV product. And a low ACV product has to have much broader demand.

"But many enterprise b2b companies have a more complicated product than Keygen and charge orders of magnitude more than they do."

And how a call will make it simpler? Or why a telephone call becomes part of the service provided for the additional (higher) price (instead of other alternatives)?

The more that people spend the more they want to talk to an actual human to make sure their product and psychological needs are taken care of, in terms of being comfortable with the sale mentally too.