dmccoy1693 said:
But planets that exist in the livable zone, have an atmosphere capable of supporting life, water in sufficient quantities for most of the planet to be livable, AND have a great enough mineral diversity and deposits to profitably mine and support every industry known to man strikes me as unusual.
Not every system is created equal.
True, and I agree... but you can
make them equal in many ways.
Like I said, build a bunch of agro stations or even massive greenhouses and you've got all the crops you need (and if there's no native life then great - no need to worry about pesky alien bugs eating your crops too).
And a system lacking inner planets and/or a belt might not have such a bounty of mineral resources, but there's still an entire mainworld's worth to mine (and with shorter travel time too). Even better if it's non-habitable, because then you don't need to worry about pollution and can strip-mine away!
There are plenty of resources available within a system. You've got abundant hydrogen and helium-3 in the gas giants, you've got ores and minerals in the asteroid belts and inner planets (and mainworld), you've got organics on the habitable planets or on the dedicated space stations - heck, you can even make petroleum products by breaking down organics in special factories. While you may not have a habitable world in every system, you are going to have a lot of those other things because those
are common in the universe.