Will there be a time where we would all have to literally fight for resources?
This is already (always) happening. Right now, all of us (those who know about bitcoin) are "fighting" for this limited resource.
It becomes now a problem when the government has to answer these questions:
1. What to produce?
2. How to produce?
3. Whom to distribute the product?
It seems to me that the most important question that any government 1st of all decides is "how to hold on to power for as long as possible".
In the conditions of limited resources in which we live, there will always be a shortage of resources, and, accordingly, an uneven distribution. The closest example is bitcoin. Look, someone doesn't have a couple of satoshi, and someone has hundreds or even thousands of bitcoins. The same thing happens with traditional resources: money, land, minerals, and so on.