So now that even my high school friends are on the lookout for these big IPOs, they might not happen so fast, because the companies will have to really bring in

So now that even my high school friends are on the lookout for these big IPOs, they might not happen so fast, because the companies will have to really bring in the revenues to justify those valuations before going to market? The reason valuations jumped so high is because the 'unicorns' and the rest of the SaaS sector have gotten so much better at capturing value. Obviously that's not a bubble scenario. However, there will need to be an adjustment period where these companies are hitting their targets, or they face to loose some value immediately after the IPOs. Does that make sense? Is that bad at all?