Where do you find clean water to fill the pool with?
> You need industry to have a middle class.
Your average industrial assembly-line worker is _not_ middle class. They are horrible jobs no-one really wants back, or at least not for themselves.
It is very much possible to keep your air and environment clean, and still reasonably grow and remain relevant - look at France.
> You need middle class for capitalist consumption.
Again, industry workers were not middle class, and if you pay them enough to be middle class, your product's price stops being competitive.
To have middle class for capitalist consumption, you need to stop funneling literally _all the money_ to single-digit amount of people and companies, leaving everyone else poor, regardless of what they do for work.