Funnily enough, I've got a few friends who are long time iPhone users, who actually point this stuff out themselves:
"OMG! Have you seen the eye watering price of the new one?"
"Yay, I finally get stuff you've had for years."
Neither party would ever consider anything else, and they both buy the new model every year. 🤷
At this point I admit that my reasons for choosing Android all those years ago no longer exist or matter, but I can't imagine changing ecosystem either.
In certain places like India, WhatsApp is the default means of communication for everyone.
You can use it without phone data if you are on wifi, it supports better quality than sms for sending images, you can video chat with it, it's cross platform, etc etc.
What's more amazing to me is that it's not more popular in western countries.