Genericization happens all the time. Many brands throughout modern history have fallen into similar patterns[0] (capitalization sometimes, but not always, survives). Where I grew up in Mississippi, many people would refer to soft drinks as "[Cc]oke" which led to interesting excerpts such as "What kind of coke do you want? We have Coke, Sprite, Dr. Pepper...".

[0] https://en.wikipedia.org/wiki/Genericization