If the Ozone layer is depleting, why can't we just rebuild it?
From what I read ozone is pretty easy to create, even ionic air purifiers produce pure Ozone. What is stopping people from creating a machine that could repair the atmosphere? (along with everyone taking better care of the environment)

the problem isnt creating ozone
but getting it into the upper atmosphere where it is needed,
it would cost huge sums of money to create a machine to pump ozone in the upper atmosphere.
and on top of that the atmosphere is designed to filter ozone out , the thing we did to destroy the atmosphere was just make this process more efficient.
you cant make money if there is nothing to scare people with.
you cant rebuild air.