Chief executive officers at e-commerce firm Adyen and ridesharing and delivery app Uber are not following in Tesla’s Bitcoin footsteps just yet, but for different reasons. In an interview with CNBC’s Squawk Box today, Uber CEO Dara Khosrowshahi said conversations about Bitcoin (BTC) as an investment for the tech firm have been “quickly dismissed.” Khosrowshahi was responding to a question as to whether the company would copy Tesla's example by setting aside a percentage of its investment portfolio into Bitcoin. “We’re going to keep our cash safe,” he said. “We’re not in the speculation business. The upside in our company …