There's no "intention" involved or necessary. If you make more copies of yourself then there are more copies of you than there are of the thing that makes no copies of itself.

Viruses don't have intention, and they're not worried they might die out. Yet most viruses spread because the ones that don't spread are rare one-off occurrences, while the ones that do spread end up with billions of copies. The non-spreaders don't even have to die—they just exist in far, far fewer numbers than the ones that double every few minutes.

Viruses don't have intention (IDK what this has to do with anything), but they do compete because the risk of extinction. If there's no extinction mechanism then the weak organisms do not go away, everything just accumulates (like rocks). This is why you may have heard the term survival of the fittest.

Software is like rocks, it doesn't need to evolve to exist. We still have infinite copies of Windows BOB available, for example (literally the exact same amount as most other software).

We can make infinite copies of Windows BOB, but we haven't made as many copies as we have of more useful software. You don't have to delete it for there to be a selection pressure—you just have to copy it less. Extinction is not necessary, only a difference in propagation rates. You end up with more of what propagates more. I keep saying this and you keep ignoring it.

"Survival of the fittest" doesn't mean the guy who never has kids but lives to 120. It's the one who has ten kids before he dies. That's the lineage that ends up dominating the population.