Why are some free? Some less expensive but require a test and some more $ but no test.
Not sure what you mean by FRS and wild west?
I pay for a fishing and hunting license, they go back into the system to fund the activity and that's fine. It just seems odd about the different licenses and a specially the antenna thing on the GMRS/FRS free to use radios.
/// Personal Opinion Disclaimer: these are my thoughts, not necessarily the official logic of the FCC ///
There's a myriad of reasons, but to some extent it kind of boils down to, "with more power comes more responsibility." Very simplistically, the more power you're dealing with the more "skin in the game" you should have, whether that's dollars or hours.
For FRS and MURS, where you can buy a radio, walk out the door and start using it, you have basically 0 skin in the game. There's no training or money related to the actual service involved, so there's basically nothing to make people feel somewhat responsible for the appropriate use of the system.
For GMRS, there's a little more power (this relates to antennas as well) and there's a little at stake, so the hope if you, as a user, feel a little more responsible to treat the system and it's user with respect.
For Amateur Radio there's even more involved: the time and effort to actually learn in depth how things work, both from a technical perspective and hopefully from an etiquette perspective. So maybe people who've put that effort in deserve access to more spectrum and are more likely to use more power appropriately.
I don't know, that's my take on it. Another explanation: different strokes for different folks. Some people don't wanna pay and some are willing to. Those who are willing to should get more than those who aren't. And in general the thing people want are spectrum and power... so... that's where they draw the dividing lines.