Well nothing is going to change until people start telling boards of directors to go fuck themselves. Nominally BoDs are fiduciaries but frankly that doesn't mean much these days, and directors have every incentive to preserve the status quo rather than engage in any kind of innovation as regards corporate structure. In this the BoD has no more privileged insight than any of the shareholders and should be ignored. There's no guarantee it will make Twitter profitable but there's the potential to enrich the public without the shareholders being measurably worse off.