The short answer is that it's unreasonable to force you to connect to the grid, that should be a choice as to whether you want to act as a wholesale participant or not.
One point of contention, most ISO's don't own the generating assets producing the power. They (the generators) are contracted resources who participate in the market with the intention of making money. They are typically privately owned, funded by private capital, and what they receive is what their power is worth, regardless of what the energy board, utility or ISO pads that with or how they average it to resell to consumers.
The primary disconnect appears to be that retail customers, who also want to be generators, seem to think that their power is worth more than other wholesale market participants, and this has been promoted by ISO's, utilities and the like, through subsidies, in an effort to increased and encourage solar uptake. So, the elimination or dramatic reduction in these incentives has, understandably, led to confusion and in some cases, outrage, but it's truly just a natural (and long overdue) evolution of the system.
So, ultimately, you should not be forced to participate in the market if you don't want to. But, if you do choose to participate in the market as a generator, you should be compensated just like another other market participant, who has also made a capital investment and are simply looking to make a profit on it, but are at the mercy of what the market pays. Disproportionately over-compensating some market participants beyond what their power is worth; perverting the market system, ultimately just drives up retail rates and system costs, which then burdens everybody else (primarily the retail ratebase).