Diki hit the nail on the head. It's simply a cost-cutting measure--nothing more.
And, anything electrical can develop a short circuit--anything. If it's plugged into an electrical outlet, and does not have an on/off switch, not only is it vulnerable to a power surge, but as Diki stated you cannot select the sequence the equipment is turned on or off, which in some instances, could cause serious damage to other equipment.
What I find really interesting is that when your TV is turned off by remote control it's not really off. Instead, it's in a standby mode. It still draws power and over a year's time that can amount to a significant increase in your electric bill.
Install an inline switch, or use a surge protector--it's a lot safer and less expensive.
Cheers,
Gary
