restore your library,

grab cards from exile(out of game, literally),

Reverse win conditions,

Prevent losing,

Generate infinite loops - both deterministic and not(with randomness).

Create tokens(sometimes coupled with above) - which provide unlimited resources with a sac outlet.

And those aren't fringe cases - for example in EDH format quite a lot of decks win by creating some kind of infinite loop, or by generating infinite resources(or sky high amount of them)

So i would argue that resources aren't finite.