It would appear that 2017 was a pretty great one financially at Sony. Not only did their PSVR unit break the 2 million sold benchmark, but they saw an explosive increase in software sales. However, hardware sales were slightly down over the year, but it didn't seem to discourage the company.
According to a post by GamesIndustry, the PS4 still sold 20 million units in 2017, beating out the Nintendo Switch's 13 million units. This now puts the total number of PS4's sold at 73.6 million, which is just 13 million units short of the PS3's lifetime sales. Still, even with those numbers, holiday sales were for hardware were down 5% from last year.
Software sales took a leap from 50.4 million units to 55.9 million, meaning Sony sold 5.4 million more units this year than last. As of today, the company has moved a grand total of 645 million PS4 titles. Sony thinks that those numbers were driven by digital downloads from the company's 31.5 million PSN subscribers.