I'm building my systems.

Ask them if you deposit say $250k with them as MM or CD with them having control over it.  

Legal and ethical implications: Agents engaging in such practices may face:Legal consequencesLicensing penaltiesEthical violationsThese actions ultimately harm consumers by restricting options and potentially inflating costs.The new system, allowing buyers and their agents to negotiate commissions directly, promotes transparency and fair competition.

Plus if you have good systems in place, you should be spending much less time on each booking than what your cleaner spends cleaning it. 

If you add unit to your home, your home likely became rent controlled.  

The solar system adds no value to my property for rental purposes, and I may even be ripping up the roof & replacing it in the new year.Beyond sending a nasty letter through my attorney via certified mail, demanding the company come pick up their equipment, am I required to take any further action or fulfill any obligations regarding these contracts?

Systems.

I'm not stating that it's inherently wrong, but aspects of it have gotten out of control.

The KISS System if you will.

You can argue I need a property management company and that I’m too lenient but this system is working for me.