The PS4 is doing very well for Sony even though the standard console is a bit long in the tooth at this point. The console continues to sell robustly and analyst Lewis Ward, a researcher with IDC, says that the console will probably hit 100 million units sold in 2019. That would mean between 2018 and 2019, the console would need to sell another

Source: Hot Hardware – PlayStation 4 On Track To Top 100 Million Units Sold In 2019