The parent may not be able to dictate the browser compatibility, actually. Customers will use whatever they want, and if it don't works then they'll just 'whine

The parent may not be able to dictate the browser compatibility, actually. Customers will use whatever they want, and if it don't works then they'll just 'whine' to the commercial next time he tries to sell them something. Do this too much and it's a recipe for disaster.