I write that off as the "magnetic aura" affect. When so many apps/pages are written the ones that have the closest UX to the UX the user already has are the o

I write that off as the "magnetic aura" affect. When so many apps/pages are written the ones that have the closest UX to the UX the user already has are the ones that are going to be successful. You can deviate only slightly from the existing 'critical mass' or risk not getting adpoted.