Yes, once you scale really big it is hard to keep a high growth rate. But if you have been always growing at 50% YoY, it is possible to keep that rate even at year 12. This is pretty common amount bootstrappers. I am speaking from my own experience at the company I founded: JotForm’s last 7 years were at 50%.

Ahrefs recently announced a similar growth rate: https://medium.com/swlh/how-we-achieve-65-yoy-growth-by-igno...