I wouldn't class either as tsunamis and doubt they will ever be in the league of an Apple, Google or Microsoft.

You realize you just named 3 of the very largest companies the world has ever seen and all just a few decades old. That's a pretty high bar.

Yes I do, that's why they are called revenue tsunamis. I guess my issue is that I don't see why if a new online startup is managing to make some revenue, this suddenly means it is a "revenue tsunami". Comapred to Instagram ok, compared to Apple et al - no.