Various state and federal accessibility laws would've made that a very questionable decision for a lot of industries. Given that it would cost money simply to get programmers to implement and might lead to more costs from legal challenges I suspect a lot of sites like banks and the like would've avoided it.

Now when it comes to basically any news site, entertainment service, social media, online store, or anything else that makes extra money on ads and harvesting user data? Oh yeah, they'd implement it in a heartbeat.