Paradoxically the less skilled person needs better and more expensive tools just to approach parity.
Actually, that's is not entirely true.
Let us imagine two rifles, one a theoretically perfect rifle that always puts the bullet exactly where you aim, and one that that has a 5 MOA dispersion around the point of aim. Now we also have two shooters, one who is an expert who makes no aiming errors and a tyro that always jerks the trigger, or makes other errors so as to NOT be aiming at the "bullseye" when the gun goes "BANG".
Now, obviously the expert with the perfect rifle will never miss the bullseye, and with the 5 MOA rifle shoot a cloud of holes centered on the bullseye 5 MOA wide. The tyro with the perfect rifle will
never hit the bullseye, as his errors and poor techniques always have him aiming somewhere else when the gun goes off. However, with the 5 MOA rifle he has a chance of hitting the bullseye, as sometimes the tyro's aiming errors will be offset by the rifles inaccuracy.
With a standard NRA High Power match target the 8 ring is a little bigger than 5 MOA, and the "X" ring is 1 MOA, the expert with a 5 MOA rifle will always place a bell curve distribution centered on the X ring, so 68% of his shots will fall in the 10 ring, and 27% in the 9 ring, and remaining 5% in the 8 and beyond. With a ten round string that would be a score of about 94 to 97. The tyro with the perfect rifle will score around 80, however, with the less accurate rifle he would average a score of around 85 to 86.
Now we all know that there is no such thing as a perfect rifle, a perfect shooter, or even a shooters that are "perfectly bad", but on average the above is true. That is the funny thing about "inaccuracy" or dispersion, if you have many elements that make up a system's total error, sometimes the individual errors will cancel out.