Electricity markets and electricity networks are designed by the regulator.

Incentives are planned by the regulator so that individual stations or companies have the correct incentives to have capabilities that the network grid needs.

One example is financial incentives to provide black start capabilities. Another example is incentives to provide power during peak loading (peaker plants). There are many more examples of incentives designed so that the needs of the whole network are met.

If an operator is incentivised to act selfishly in such a way that the grid will fail, then that is a failure of the regulator (not the individual operator).

Blaming individual people or companies for systemic faults is generally a bad thinking habit to form. There are too many examples where I see individuals get blamed. Fixing our systems is hard but casting blame in the wrong places is not helpful. It's difficult to find a good balance between an individual's responsibilities and society's responsibilities.