As the artificial intelligence revolution rips through the global software industry, private equity firms with exposure to the sector are spending a lot of time scrutinising their portfolios for cracks.Scorecards and rating systems have become commonplace as firms ask themselves whether the moats they thought surrounded their portfolio companies remain in place.Subscribe to gift this articleGift 5 articles to anyone you choose each month when you subscribe.Subscribe nowAlready a subscriber? Fetching latest articles