moral responsibility

I don't think it is so black-and-white "money vs. morals". Red Hat's long term business plan and viability has apparently had everything to do with being a good FOSS citizen, "moral" if you will. So in the long run, it may be essential to the "fiduciary responsibility" to behave in a way that doesn't piss off the free software community.

Short term, sure, all the time we see companies doing dubious things to make the quarterly reports match up to market expectations. "Fiduciary responsibility" gets used as an excuse for almost any kind of trickery, but it doesn't mean the whole idea of investor-owned business is wrong.

Put it this way, if investors are in it for the long run, they are going to want management to do things that will win customers and keep them loyal for many years.