it's a great idea, but - depending on where you live * - in the current political climate (i.e. corporate consensus) it's on a scale of "unlikely" to "the opposite is more likely"
this might fly in the Germanic countries (sans England), but in most Western countries the corporate pushback would be far too high.
even if long-term it would be cheaper, businesses a) don't like change, and b) don't like being restricted in any way whatsoever. imagine how hard coca-cola would lobby to keep using their classic bottle design. imagine how easy it would be for the corporate-owned press to sell this as Sovietism reborn or some other such nonsense
I feel like in America and the more right-wing countries, you're far more likely to be seeing a law enshrining the future rights of businesses to non-homogeneity
*America, based on your use of fluid ounces