An autoclave requires distilled water and an enormous amount of energy to operate. You could save the water but you'd potentially need to distill it again after. They use an enormous amount of energy and water overall.

The feed for the cells still has to come from somewhere too, and the growth of the cells is aerobic and generates CO2. That said, artificial meat is supposed to hit market parity price by 2026 and probably below parity after. [1] We will probably see a rapid transition to cultured meat within a decade. There are a very large number of these companies competing right now. [2]

[1] https://www.mitsui.com/mgssi/en/report/detail/__icsFiles/afi... [2] https://cellbasedtech.com/lab-grown-meat-companies