So, my completely uninformed guess at what has happened:
1) Saudi Arabia wanted to do an Aramco IPO to raise cash, after $100+/barrel oil was no more
2) Saudi Arabia found out they needed to disclose a lot of the finances of Aramco in order to do that on major stock exchanges, and didn't like that
3) Instead, royal family tried pouring cash into Japanese Softbank, which poured it into tech startups like Uber and WeWork
4) The IPO's of these do not seem to be raising the big profits which were hoped for
5) Back to the idea of an Aramco IPO
Again, just my guess. If so, then we might expect American VC money to recede a bit in the next year, as foreign enthusiasm for funding it cools a bit.