Over the past week, the average daily revenue of miners have earned has declined. The largest decline was observed in Litecoin with the hash rate and the price of litecoin also dropping since the halving on August 5th. However, the total revenue Bitcoin miners have generated since the launch of the network is approaching $14 billion according to data from CoinMetrics. The amount of revenue miners generate is a key figure on-chain analysts track to estimate how much capital miners have invested in hardware.
Source: CoinMetrics State of the Network