But you're starting with the wrong assumption: that people focus on having the best option in each situation. The people buying Airpods probably know they're not the best headphones or microphone. They are the best jack of all trades even if master of none. They are the best package. And you rarely choose what's best for others, others probably do the same.

So when you WhatsApp from your mobile someone else has to see you type slowly, full of autocorrect errors and typos. You don't switch to the web Whatsapp from a computer, or a model M attached to the phone despite knowing they are faster because you get their messages fast and correct so it's all great.