Within the last few months, tech startup Uber could once more raise its equity funding to $7.4 billion. Its worth has now risen to $51 billion, according to its latest valuation. That is double the worth of Airbnb, which is third in the ranking of the world’s top 10 startups. However, this period of soaring growth might come to an end, as voices like that of venture capitalist Bill Gurley or Satya Nadella, Chief Executive Officer of Microsoft, advocate more caution with investments in this area. Both say corrections are overdue in the market. This could well lead to changes in the list of billion-dollar startups.