I think the problem of understanding this bitcoin problem is unlimited is because of the lack of technical knowledge about how bitcoin works and explaining it does not make it simpler either by those who understand it.
Bitcoin is decentralized. And since it is a virtual commodity, it follows the trend of demand and supply. When supply is less than demand, prices should rise and when demand is less than supply, prices will fall. Currently the demand for bitcoin is increasing every day.

On the other hand, miners will not run out of code to use. The alphanumeric combination of bitcoin code is unlimited.