Whether that is carried out in a microbrewery, or on an industrial scale, its pretty much the same.
The basic process and chemistry yes.
Everything else, no. You have just shown how ignorant you are of what is actually involved in brewing beer.
It’s like trying to say there is no difference between the cheapest catering frozen sausages and sausage produced on a small scale by a local butcher.
I agree that that the word “craft” is used in a lot of sh!te marketing for some over priced rubbish.
However, the US “Craft” Brewing revival, has led to some really good beer, which has spread to the UK and Europe.
In the US they have an agreed definition of what “Craft” brewing is, this is an attempt to protect it from the big boys.
https://www.brewersassociation.org/statistics/craft-brewer-defined/%5B/url%5D
https://www.brewdog.com/lowdown/blog/defining-craft-beer
Why do a lot these “craft” beers cost more? A lot of it comes from the cost of ingredients, particularly in a very hoppy beer. Hops are not cheap and in mass produced rubbish, they are used in the most economic way, purely for the bottom line.
If I have to use the word “craft” to help protect the breweries who produce this stuff, then so be it.