What is a Turing complete machine?

It is an unlimited system in which hardware and computing power are not constrained by traditional systems. Functions can be created with an unlimited nature in mind. This means you can create an automation that will work not only for a year but also for a hundred years or more.

The system (the Bitcoin network) has an economic incentive to constantly grow (miners are in eternal competition). The storage, hardware, and computing power increase in parallel with this growth.

The cost borne by users for using such a system can be partially recycled back into the system to enable its constant operation (the miner fees that it must pay). As long as such a system remains inactive, it will continue to function. Such a system can even be created in such a way that if it stops functioning but receives funds later, it will restart from the last point where it ended.