Facebook, Google, and Uber have all had periods of growth that fast.
For example, Uber's overall employee headcount went from ~2500 at the start of 2015 to ~13,000 at the end of 2016 -- although that includes non-engineering hires.
But for companies that aren't Facebook/Google/Uber? A slower growth rate is almost always the better decision.
It made sense from the perspective that the product we were building was good but a little 'behind' our competitors and we needed to catch up.
The scaling has allowed us to tackle new projects that utilise the underlying platform that we would have otherwise not been able to even consider.
In the title story :
>In 2016 we were acquired through a private investment consortium and given an injection of funding in order to 'go faster'.
I'd not be surprised if the consortium would sell them for a nice profit soon. Would look like a typical private equity operation.