What do you mean? It is on many Androids and every Chromebook.
I just checked some website stats I have access to and ~78.6% of iOS users use Safari. On Android on the other hand, ~76% of them use Chrome, ~8.1% uses the Samsung Browser, and there's a marginal amount of people using other manufacturer-provided browsers like Huawei Browser and MIUI (Xiaomi's default). Of course I don't know the exact manufacturer of Android phones to be able to tell what percentage of say Samsung devices switched to Chrome, but I'd say the pattern's still pretty clear.
The only people likely to switch browsers are desktop users, but they total to <20% of the traffic. Funnily enough Chrome isn't even the top browser overall, it's Safari, but that tells you more about my clientele (richer than average for my target market).