Airbus and Boeing could join together and demand high minimum standards to operate their equipment, and perhaps review and admit interface flaws
bud, keep on dreaming ....
Did Audi and Toyota join together to resolve the "sudden acceleration" problem? Never. It took the pressure from many lawsuits to have both companies redesign their products. No regulators were involved, just the lawsuits and dwindling sales, because the customers no longer bought their products due to the flaws.
In aviation there are similarities, like impotent regulators, but even more differences. Mainly because there are not many choices to buy, factually a duopoly, and because it's never the direct user (pilot/passenger) who buys the product, but some remote beancounter who rarely expose his bum to the product. He only cares about the price tag and for a lesser one takes cynically into consideration some losses.
Redesign of known flaws happen very rarely in aviation. Mostly these glitches are simply handled with some badly written bulletins to pilots, thus cheaply handing the responsibility down the food chain.
There needs to be a hell of a lot more pressure from passenger associations via lawsuits, the press and their chosen politicians before anything changes.
But then again: Those same politicians nominate the regulators .....