Bill Ackman gets into Microsoft for reasons similar to Cramer's arguments to hold it

Jim Cramer is warning investors not to sleep on Microsoft 's ability to stay competitive. Most of the analyst community agrees — and so does at least one billionaire hedge fund manager. "The main reason we don't want to sell [Microsoft] is because they actually have the balance sheet to do what they want," Jim said on " Squawk on the Street " on Friday. …