More people these days use laptops, all-in-one desktop computers, smartphones and tablets as their main computer. Laptop, all-in-one PC, smartphones and tablets only have one power button which turns on the computer/device, monitor, and speakers when you press the power button which turns everything ON automatically, so users do not need to physically press the power button on the screen, and speakers like most desktop computers with a standalone monitor.
I think fewer computer users except desktop computer users which use a standalone monitor manually turn ON their monitor before turning ON their PC, or turning ON their PC before turning ON their monitors.
There are also some computer users who never turn off both their desktop computer, or monitor because they are too lazy to turn them off, or the computer and monitor is used to monitor stuff like security cameras and monitors where there is a security guard always looking at the security camera video stream.
Some Desktop PC users with a standalone monitor sometimes just set their monitor to standby mode where the monitor is off, and turns ON automatically when it detects a signal, and turns off the screen automatically when there is no video signal being sent to the monitor.
I think fewer computer users except desktop computer users which use a standalone monitor manually turn ON their monitor before turning ON their PC, or turning ON their PC before turning ON their monitors.
There are also some computer users who never turn off both their desktop computer, or monitor because they are too lazy to turn them off, or the computer and monitor is used to monitor stuff like security cameras and monitors where there is a security guard always looking at the security camera video stream.
Some Desktop PC users with a standalone monitor sometimes just set their monitor to standby mode where the monitor is off, and turns ON automatically when it detects a signal, and turns off the screen automatically when there is no video signal being sent to the monitor.