There were signs of rate hike in 2019 but COVID forced Fed to create trillions of $$. Which only added fuel to the fire; equities, housing, crypto saw unbelievable growth.
However the signs of inflation were clear in early-mid 2021 they were hoping it to be transitory. But when the inflation data came in late 2021 it turned out to be multi-decade high leaving Fed with no choice but to raise interest rates for the first time in more than a decade.
Which brings us back to growth companies. As Uber's CEO candidly stated "Channeling Jerry Maguire, we need to show them the money". 2020s will be all about cash flow and efficiency.
On the other hand expect to see cool innovations as it requires genuine scarcity to look for out of the box solutions. While Amazon's stock soared in 2010s their core tech was being built in 2000s while they were relentlessly driving for efficiency.