Mining could be said to be the one that supplies the BTC to the market. Now with each halving, the rewards get reduced and miners are now more lets say, forced, to improve their equipment or quantity of miners to be able to produce more BTC blocks.
Plus, with how more miners are entering the scene, the difficulty of mining spikes because BTC adjusts it's difficulty based on how large the computing power is used on mining a bitcoin, to at the very least, maintain block production at a stable rate.
Additionally, with how the mining rewards are being halved, and how the supply is being more and more limited, naturally, Miners will have more and more problems in fighting over blocks because all of them are now fighting over resources. When BTC was launched, everyone with a mining rig could have taken one block to solve and no one would've fought for it, but with each passing halving, supply halves, rewards halves, and miners have to fight others now to earn their keep.