Hello In2gadgetz
First of all, hello and welcome to the SBB Community, we are a customer-to-customer support platform run by volunteers.
What route are you talking about, please?
It is true, Swiss trains use a free seating system, optional seat reservations are only possible on a few train categories. We use trains like others use local buses in their countries.
SBB is not actively promoting seat reservations, it is rather considered an extra-service.
We give more insight on the topic in our blog:
https://community.sbb.ch/blog/23887-demystifying-seat-reservations-on-swiss-trains-a-comprehensive-guide
Kind regards,
Roland