Nep-Neps
Your question suggested you’ve studied Economics, so I went with the shortest possible answer.
Here’s a longer version, keyed to your followup post:
Most (think 90-ish%, not 51%) of the “money supply” in a modern economy is actually credit.
As you point out, EVE has almost none.
This makes CCPs options regarding ISK very different to e.g. a Reserve Bank’s.
Your facts are correct …
… but my point is linked to the difference in tools for “monetary policy”. The main ones governments use aren’t available in EVE.
IRL, the amount of money is matched to the productivity of the economy “automagically”.
It fails quite often, but that’s because, while the financial systems of modern “free market” economies are very useful, they are also inclined the “stack the deck” and take more than they should. The process can be extremely destructive (e.g. the 2008 meltdown).
During the intervals when the relevant governments and government agencies do their job reasonably well, and the finance system doesn’t (more realistically isn’t allowed to) steal too much, the process of matching the amount of “money + credit” to “real” economic activity is “automagic”.
EVE isn’t much like that. The nearest thing to a natural balancing process is the goal of high-income EVE PvEers to optimize their ISK/hour income, including the split between mining ISK, mining ore, or mining SP. The process seems to have a lot more “rough edges” than RL when it’s all working well.
Apart from that, CCP have the kind of thing you’re discussing: making ISK herder/earlier to mine, making ore harder/easier to mine, etc. They may have ways to manage “SP mining” too, but I wouldn’t know. I wish Eveconomist hadn’t stopped posting - he/she seemed to understand SP mining very well.
BTW I could explain in more detail, and you’d almost certainly understand. But this isn’t a chat in a civilized bar - it’s the EVE forums. I CBA dealing with the lunatics.
There are a few people here who could do a better job than me though - perhaps one will add to (and if necessary, correct) this.