Potentially, but that's not what killed Xerox (who had a decade head start on Microsoft and Apple and had full visibility on what they were doing in the marketplace for another decade before GUIs became commonplace).

They fell victim to the Innovator's Dilemma: when a new technology comes out that fundamentally rewrites the rules about who your customers are and how markets should be organized, existing market leaders cannot maintain their lead. That's because their market itself gets restructured - where previously one market with a dominant firm and set of existing customers used to exist, now oftentimes new markets with new dominant firms and a new set of customers exist. Basically it rewrites all the assumptions that the business is structured around.