I once worked at a BIGCORP. The newly appointed CFO said the new philosophy was that if a division which was its own corporate entity was not number one or two in its industry, it was best to sell and exit. They did this for many years and wound up selling everything. I would argue this is a net negative for society and consumers who have less choice less competition and higher prices.
In 2015 YouTube was separated from Google with both owned by Alphabet. My guess is that Sergey Brin couldn’t care less if both companies went out of business. All they care is ROI.