[arsenico]

Takes time, a lot of marketing money, more time, more money. Look at what is happening with Telegram globally. It is used as a serious alternative to WhatsApp in some countries, but far from being a real global competitor still.

[perilouspear]

UI/UX also needs to be buttery smooth and non-technical, especially where setup/onboarding is concerned. The more you stray from that the more difficult it's going to be to bring in a significant population of users.