All they had to do was keep focused on their actual demographic (high-end office workers), allow their other demographic (drug dealers / buyers), and let everyone else worry about consumers.
Always refine the keyboard, unquestionable notifications, ignore the “single pane of glass” trend, and definitely not even a single phone with Android.
Their user-base would be “small”, but so what. Noone needs 8 Billion users. 100M is plenty to sustain R&D.