Generally speaking a shareholder is just a money investor who no other interest then to make more. The Capitalist with capital C ;)

A stakeholder is everyone that is invested or affected by or can affect the decisions made.
For example, if you want to build a new stadium for a team, then the fans are stakeholders. Not mentioning their money, they invest a lot of time and emotion being there. They are important for the functioning (and profit) of the stadium.
Same goes for the neighbors. They are stakeholders, too. I you ignore them and just put the damn big thing on the other side of the street, they may get... aggressive about that.

Gentrification is often the result of shareholder value above stakeholder value.
You have a "colorful" area that is attractive. Investors come, build houses for the rich ones who want to live in a colorful area - and the prices rise so much that the people who make the place colorful cannot afford to live there any longer.
10 years after the "investment" the houses are sold for profit and the area has changed from "in" to "rich ghetto".