It cannot be called "an act of greed" because it would level the playing field. It would result in all competitors using the same mount and electrical connections, thus forcing them to compete solely on value, performance and quality.
If anything, it could be something like an "act of altruism." But with qualifications, because there will be winners and losers. But most of all, it would be highly disruptive for an industry already facing some serious challenges.
It would be something that would benefit competitors, while simultaneously hurting anyone heavily invested in one particular lens system. But, it would also greatly benefit new users, who now have more competitive choices to make.
But there are fewer and fewer of those "new users" in a shrinking market. And the anger generated by a new universal mount would cause existing users cannot be underestimated.
Those existing users would now be in the position of having to replace their lenses, start using some cumbersome adapters, or buying a new "universal mount" camera body. This could result in a complete marketing nightmare at this point.
And because of all that, it is highly unlikely it could ever happen.