Co-founder Kevin Systrom testifies that Mark Zuckerberg withheld critical resources from Instagram and constrained its growth to avoid harming Facebook's engagement.
Systrom stated that despite the constraints, Instagram has achieved 'skyrocketing growth' and has generated significant revenue.
He also predicted that Instagram would have probably succeeded on its own without Facebook's help.
Testifying in the Federal Trade Commission's lawsuit, Systrom remained confident about Instagram's success.