Spot on, that's the beauty of Bitcoin's economic model. It self-balances through its difficulty adjustment and production cost, keeping things in check.

If mining becomes too cheap and profitable, more miners jump in, raising the difficulty and thus the cost. If it's unprofitable, some miners drop out, easing the difficulty until it finds equilibrium.

This built-in feedback loop is key to Bitcoin’s ingenuity – ensuring security while adapting to market conditions without any centralized control needed. It’s quite a dance of numbers and incentives!