At 71.5 years old two things I can tell you:

1) I am not nearly as "on it" or as "aware" as earlier in life. Warren was leaps and bounds FAR better than me at 71.5 but that was a long time ago and he aged to being not nearly as aware as in the past.

2) For about 30 years now I have reminded investors that if you choose to own Berkshire then you might best not sit around and expect this company to be your investment guru, that it is you not just them that can choose to buy stocks (like Google).

Me, my brother, my sister, and my step-mom each inherited a whopping 25 shares of Berk from dad who died Jan 10th, 1970. All of us kept 4 digit inheritance and not one of us ever berated management for not buying what we could buy ourselves, to me a very silly perspective.

I have owned Google for many-many years. I never expected Berk to buy Google, never once thought about it.