That's all kinda reasonable. Especially the part about "the more it's systems depend on the wealth of the elite for taxes.".. That's just logic and reason.
THe biggest problem I have is evidently you believe that PROFIT is threatening to become the "sole motivator".. Here's some logic and reason.
You cannot make a profit unless you provide a good or service that people NEED and WANT.
Therefore businesses and corporations strive to find NEEDS and WANTS to fill gaps.
Thus profit is always a secondary consideration to defining a business. I've been involved in many start-ups and the desire to fill societal need comes first -- even if we have to work REAL HARD to figure out how to serve that need and balance that with satisfying the stockholders, the banks, and paying our employees.
THAT's the primary motivator. You can find some NEEDS and WANTS that might NOT be profitable. Those need to get addressed some other way. But I dare you to find a societal need that it is not being addressed by corporations if they eek a profit out of it.
Sure, that's how it starts. Once a business establishes itself, however, priorities shift to weeding out competition.
Over time, many markets dwindle in competition partially because of oligarchic tactics. It's easy enough to buy out your competition in many cases.
In other cases, corporations use anti-competitive measures that either are illegal (but often hard to prosecute) or are legal but clearly unethical.
And then there are cases where they use government to block competition.
In modern capitalism all of these things play a part, so it's not just a matter of filling a need. A lot of profits are ill-gained.