> The vast majority of Android users use the Play Store (or the Amazon thing) exclusively
Are you sure? Android phones are pretty big in China, which is by far the world's largest smartphone market, and I guess Play Store & "the Amazon thing" (I don't remember the name either) adoption there is close to 0%. Anecdotally I have noticed a lot of people using phone vendor app stores in India (the second largest market, though half the number of devices as China) and Indonesia (another huge market). Taken together I'm very skeptical that Play Store + Amazon have a majority of Android users.
Google and its services are mostly blocked in China, so using the Play Store would require the use of a VPN or a foreign SIM card. There are a variety of local app stores. I've found that people often just use whatever came on their phone (which is often the phone manufacturer's own app store).
Are you sure? Android phones are pretty big in China, which is by far the world's largest smartphone market, and I guess Play Store & "the Amazon thing" (I don't remember the name either) adoption there is close to 0%. Anecdotally I have noticed a lot of people using phone vendor app stores in India (the second largest market, though half the number of devices as China) and Indonesia (another huge market). Taken together I'm very skeptical that Play Store + Amazon have a majority of Android users.