EV giant Tesla Inc (NASDAQ:TSLA) reported research and development expenses of about $4 billion in FY23, the highest it has to date but much lower than some of the other tech players in the ‘magnificent seven.’ What Happened: While Tesla spent nearly $4 billion, Apple (NASDAQ:AAPL) in its FY23 spent $29.92 billion on research and development, while Microsoft spent $27.2 billion. “There are gigantic differences in the effectiveness of R&D spending between companies,” Tesla CEO Elon Musk wrote in response to this disparity between the three companies. The sum total of Tesla’s R&D expenses since …