You want that but in reality, how often does it happen for popular sites? The small startup sites no one will ever visit are ready for the handicapped, slow con

You want that but in reality, how often does it happen for popular sites? The small startup sites no one will ever visit are ready for the handicapped, slow connections, work on every browser and mobile while my banks, airlines and others I need and/or visit daily barely work for normal users on high powered desktops. And the bad apps they have. Oh boy. They would benefit from a more generic bootstrap/react based wysiwyg component approach.