Any mature SaaS company will have exact measurements of acquisition costs. This is advertising, sales staff, etc.

This is one the the most fundamental components of SaaS accounting, it’s absolutely not a “wild guess”.

Acquisition cost can definitely be calculated. I'm pretty sure they know how many customers do convert into paying users from their free tier and how much does it cost to get them through other channels

> But it isn't 'economics' as there is no actual data or science here, just a wild guess

Welcome to economics.