Others have answered this, but I just wanted to point out the software devs have been managing to understand how their products are used for improvement purposes from long before telemetry was a realistic possibility.
Telemetry doesn't make it possible, it makes it less expensive.
Do you think it is the same asking a small subset of users than having info on all the users? I work as a Product Manager, and trust me, it is not the same.
Telemetry doesn't make it possible, it makes it less expensive.