Opex is "better" than capex, because cash is king. Capex in general means you pay upfront and reap benefits later. Opex in general means you reap benefits now and pay later (via invoice or credit card bill).
A business can be EBITDA positive but cashflow negative, or vice versa. However healthly your margin is, it is game over if you are unable to service your debts (including employee salary) before you receive cash from customers/investors.
On the other hand, if you are operating at a loss, you will be able to continue doing so indefinitely via continuous cash infusion by investors (which might include the public in case of a public company)... until the cash does run out.
I don't understand. Artists can also use these models to generate art, and looking at other industries, there are significant differences between professional output and "machine generated" output. Sort of the difference between a fullstack developer and no-code platform. Do developers fear no-code platforms taking over their jobs? Sure, yes for the menial tasks, but definitely not for high stakes complex products. Same as generative art - it may replace the need for those filler banners, stock photos, redrawing characters a little bit differently for that last panel - but no, you don't generate a coherent, entertaining 100 chapters manga with generative art.
Doctors ask "have you ever treated a patient?"
Pilots ask "how many flights have you flown?"