According to BitMEX Research, miners using pre-SegWit nodes face challenges in collecting transaction fees after SegWit activation. To remain competitive and benefit from the economic advantages that SegWit miners enjoy, these miners need to upgrade their nodes. This upgrade allows them to produce blocks larger than 1MB, similar to the adjustments required for a hardfork blocksize increase. This suggests that staying technologically updated is crucial for miners to maximize their profitability in the evolving blockchain environment.