Why does commercially brewed coffee taste so much better? I've been trying to figure out why coffee brewed with commercial machines taste so damn good compared to what I do at home. Whenever I'm out and about I always take note of the machines that are used in the brewing and some examples are WMF 1500S, Thermoplan Black &amp; White and Franke A1000.

I'm talking solely about black brewed coffee - no espressos or lattes. Whereas the coffee I get from these machines is aromatic and just the right amount of strong, the coffee I do at home is usually way too acidic and with a very long and overbearing aftertaste.

While I've certainly tasted bad coffee from these high-end machines it is never as bad as the coffee I do at home. I've tried researching how these machines work with the brew head and all but as I'm not an engineer I found that sorta stuff hard to understand.

What I've tried so far:
- 6-7 grams of coffee per 100 ml water
- Waiting 15-60 seconds after boil to allow water to cool down before pouring
- Different types of beans, usually pretty expensive (locally roasted, organic, non-organic, dark, medium, light, etc)
- Different ground levels for pour over
- Different brewing times (1 - 4 min)
- Probably a bunch of other stuff

My kit is:
- Full Hario V60 pour over kit (w/ dripper, server, filters and kettle)
- Melitta pour over dripper
- Kitchen scale
- Wilfa electric grinder (cleaned regularly)
- Bodum french press
- Good water source

The funny thing is that people seem to think that pour-over is better and more gourmet but I've found the case to be the opposite. I'm almost to the point where I'm thinking of buying an expensive fully automatic bean-to-cup machine...
What do I do here guys? I'm very thankful for any insight into this matter!

TL;DR - title
I think there could be a few extra factors, besides grind type effecting your final cup. 

Are you trying to match the taste you get from an auto drip brewer by making your coffee with a v-60?

Brewing method will change the taste.

It's good to see you are using a scale too. When I make coffee I like to follow this chart for ratio.

I use 21 grams of coffee to 12 ounces of water. It's important to note whenever the word "cup" is mentioned usually that means 6 ounces of water. 

Another thing I wonder about is the beans that the coffee house is using. You might be purchasing beans that are not giving you the flavor you are looking for. 

Personally, I like single origin coffee for pour overs and drip machines more than I like blended coffee.

You might find this post helpful for selecting the right kind of beans. 

Good luck on making a great cup!