What point are you making? Perhaps it isn't too hard to look at examples of tech companies that have done well since IPO. This is quintessential cherry picking. The market in general has been downward recently but Atlassian and Godaddy are holding their own for example:
The stocks you mentioned barely get any buzz in tech media (TechCrunch) or HN. The stocks that OP mentioned get a significant number of mentions here. A number of unicorns are dying, experiencing significant criticism (Theranos), doing not-so-well (Square, Zenefits), or exiting negative returns for investors (Gilt Groupe)
The point is the companies that seem to be getting the most hype (young, 'disruptive' companies) don't seem to be doing well as IPO companies. This is an issue for the public investors (who are often pension funds, average investors, etc) and employees.
This seems to be a clear indictment of tech media, who are more interested in hyping up stories than really digging into a company's fundamentals. The only losers are common people in this scenario.
Why would anyone even expect the set of companies that are most fun to write about to be the same as the set of the companies that are most successful? I kind of figure they would just have a representative amount of success.
I don't know why TechCrunch is indicted because it writes catchy profiles about cool-sounding companies instead of digging into the economic fundamentals. That's just two different things you can write about. AFAIK (not very far) it never pretended to be doing the other one.
Add this to the fact they announced layoffs a little while ago + are now experiencing significant competition from bigger players, one has to have a not-so-great forecast for the company
Fb will collapse too. People under 22 have quitted, and among older people, very few people post. The main product is dead essentially. Of course, the revenue lags behind this usage curve, just like in the case of Blackberry: the product was already dead but the revenue has not peaked yet. What remains is the fb messenger and very costly acqusitions of new stuff: whatsapp, ig, potentially snapchat. That strategy remanins to be proven to become economically feasible.
https://www.google.com/finance?q=NASDAQ:TEAM
https://www.google.com/finance?q=NYSE:GDDY