Isn't that the model of every private equity? It was always hard to do well.

Although it doesn't seem that way, there are lot of companies that have become large recently, it is best time ever historically for companies to be able to grow large quickly much more so than 50 years ago in the early days of BH.

There are 1000+ unicorns today, about 50 of the fortune 500 are founded > 2000, a large number of companies that have chosen to remain private with revenues in excess of >$10B like Stripe or SpaceX etc

While it is true that lot of the action has been in sectors BH has never been comfortable holding large assets in such as SaaS, new fin-tech(i.e. crypto etc), or gig econ(Airbnb/Uber etc), social media(tiktok et al.) etc, that doesn't mean the principles are no longer needed or there aren't opportunities to take stake in these now mature companies and drive value.