We just signed up to spend $60+/month for every dev to have access to Copilot because the ROI is there. If $250/month save several hours per month for a person, it makes financial sense
$60/month pays off if it saves even an hour of developer time over a month.
It's really not hard to save several hours of time over a month using AI tools. Even the Copilot autocomplete saves me several seconds here and there multiple times per hour.
Typically you have to confirm additions and cancellation is just a press of ESC key. Ctrl+z is available too.
Even when the code is not 100% correct, it's often faster to select it and make the small.fix myself than to type all of it out myself. It's surprisingly good about keeping your patterns for naming and using recent edits as context for what you are likely to do next around your cursor position, even across files.
And why AI hype train didn't work on gaming industry? why it didn't save hundreds of hours from game devs times to get latest GTA anytime sooner?
I'm not sure it's correct that we need to measure the benefits of AI depending on the lines of codes that we wrote but on how much we ship more quality features faster.