If I'm WFH why should I spend my money and use my equipment to work? I have a large gaming monitor, why should my company expect everyone to make similar purcha

If I'm WFH why should I spend my money and use my equipment to work? I have a large gaming monitor, why should my company expect everyone to make similar purchases to be able to work properly? In office even though companies are miserly, they do provide a baseline of equipment that is good enough for most people.