those with more money will print faster than others. You end up with the same situation. If a 3d printer takes 1 hour to make a chip and the printer is $1, someone with $100 can buy 100. Someone with $1m can buy 1m of them and hire others to help run them. In that case, the guy with $100 still just has 100/1,000,100 of the hash rate and will get almost nothing. Not to mention the guy with more money would go straight to the manufacturer of the 3d printers and offer a premium to obtain all of them that are created, as opposed to marketing it to the masses.
And your scenario differs from the CPU/GPU mining days in what way exactly? You're essentially saying "there's a limited amount of silicon ore available". No shit.
Will you be happy if there's a ban on people owning more than their "fair share" of chip 3D printing capacity? This is Bitcoin: communists go home
CPU mining days were only a select few. There's a massive difference between a small group of people who mine it for lulz when it has no value and those who are mining it for profit. That should be obvious -- something that has ZERO value at the time, NO uses, etc. would obviously not be competitive.
GPU mining screwed most (if not all) people who took part, due to basic economic concepts. So let's break this down.
You buy a GPU for $300. BTC is at $100. You spend $1/day in electricity and mine for 5 months. At this point, your total cost (not including time) is $450. Over this period, you mined 1.5 BTC, and BTC is worth $500 now.
At this point you've spent $450 + time, and in return, you've gotten 1.5 BTC, or $750, for a profit of $300, right?
You could have, instead, spent that $450 on BTC in the beginning. Now you'd have 4.5 BTC, or $1350, for a profit of $900.
Essentially, you not only wasted your time, but you also LOST $900 in the process. And all of this ignores all of the other things that are involved with mining (such as the other PC hardware being burned out, cooling cost consideration, etc.
Hell, we can even take the pizza time period. For $20 you could have gotten 10k BTC. Instead, you spend $500 building a rig so you can mine a few hundred/thousand BTC. Were both profitable? Yeah. But your mining actually cost you significantly more than you'd have earned if you had skipped the time sink, work, and risk, and just bought BTC outright.
I have not even heard of a single miner who has profited EQUAL to, much less above, what they could have earned if they skipped that and simply bought the coins.
Then again, this goes into economics, which is something the vast majority of people seem to have zero knowledge about.
