The "best interests of the shareholders" is a relative concept. You could make the most money by liquidating everything today... but at the minor cost of completely destroying the company and any chance for any future earnings.

Or one might could start planning for a future in which fossil fuel is greatly diminished and corporate incomes need to be derived from other sources.

You know, giving just a little more thought to the future than net quarters earnings report.

Should read the classic Marketing Myopia article by Levitt, where he made the case that railroads got their lunch eaten by airlines, primarily because railroads thought they were in the "trains" business, not the transportation business.