This feels like when 3D printers hit the consumer market and everyone declared that buying things was over, everyone will just print them at home. There's tons of benefits to standardised software too. Companies rely on the fact they can hire people who already know photoshop/xero/webpack/etc rather than having to train them from scratch on in house tools.
Business software is also useful because it gives companies a process to follow that even if not optimal, is probably better than what they’d come up with on their own.