I really should explain the idea from “below the ground up”.
To start with, land in industrial parks is ridiculously expensive. But at the same time, a lot of that land is used for often empty warehousing. And even when product is being warehoused, it is not being sold, so is seen as an expense.
Industrial parks are also often hosts to louder and dangerous businesses, dealing with lots of chemicals, and requiring lots of filtration, venting, recycling, and other requirements. So as a rule they are sensitive to projectiles being used nearby.
On the plus side, their zoning is almost perfect for a shooting range. Commercial ranges in municipalities often have to be underground, but are sometimes small and cramped, with just a single shooting lane, inadequate ventilation, and other problems.
So placing a range underneath a warehouse would have much cheaper rent, splitting the cost with the warehouse, could be spacious, perhaps as big as a bowling alley, would be temperature, noise, and air quality controlled, and be comfortable enough for families.
Being in a municipality would also guarantee a big customer flow through, including qualifications for local police and National Guard, school shooting clubs, and lots of other folks year around.
Other than packaged food and drink, a classroom, a play area for young children, there could be a gun accessories and maintenance and cleaning shop, and likely other retail.
I see most of your points, but still am not sure. It it seems to me that it all comes down to weight load on the “roof” of your shooting range. It seems to me that a warehouse would be highly unlikely to have a “basement”, given the possibility of very heavy loading per square foot of the warehouse contents on its floor (and your range roof).
I’m not very familiar with warehouse engineering design, but all the warehouses I have ever been in were concrete slab on grade...but then that was in South Louisiana, where the water table is just a few feet (or less) below ground level.