Please note the information provided below is a layman's definition designed to provide a basic understanding for the general audience.

I am responsible for designing HVAC/plumbing systems for commercial buildings.

This is by design...That should tell you what you need to know.

Finally, they are so flexible that you can designate who gets what percentage, etc.

Based on your portfolio design you can find a cashflow or appreciation small multifamily or several single family. 

They just aren't designed for a entrepreneurially minded individual.

The 400k$ quote is for a quite extensive whole house remodel (moving walls, windows, openings, expanding footprint and +1 bath, +1bed) and includes design, consultants and permits.

My tenants pay directly to a pre-designated bank account at our local credit union. 

From condos designed to accommodate couples and young families and large lake lodges which house multi-generational parties, to luxurious custom getaway cabins on stilts… investors are seeking properties that align with their guests’ values and aspirations.Aside from STR the influx of remote work has catalyzed a new wave of interest in Branson's real estate market.

They are not typically designed to create a profit for the person running it, although frequently that person does well on the deals that come through the REIA's membership.