I don't understand this comment.

The anti-tank weaponry is an order of magnitude less expensive than the tank (some is several orders).

The M1A2 Abrams has a unit cost of around 10 million USD (numbers from 2016, so likely higher now).

The drones currently destroying tanks in Ukraine (Bayraktar TB2) had a unit price of around 5 million, although some estimates are as low as 1-2 million per unit delivered to Ukraine at this point (production has ramped up).

notably - the whole drone isn't consumed when a tank is destroyed, so I really suspect we're going to see a drastic ramp up in drone warfare.