Technically yes, but not really. It’s specifically valid to observe with regards to Microsoft because Microsoft did in actual fact hold hundreds of millions of dollars worth of Apple stock for a decent stretch of time. Most companies did not.

Microsoft chose to sell their Apple stock in 2003. This was entirely their choice. They didn't have to. They could have sold it in 2005 and made an additional billion dollars. They could have sold it in 2007 and made another ten billion dollars. They could have sold it today and made a hundred billion dollars.