While Azure companies do tend to skew "larger enterprise", I don't think it's fair to say they are lower paying. If anything, more Azure-related jobs I have seen a higher-price point on than AWS jobs (in my local sphere). I think this is because Azure has higher demand than supply, and people are less likely to choose it as their primary cloud right out the gate.
It's also worth noting that a lot of consulting companies focus on Azure. This is because of perverse incentives, but still worth noting.
It's also worth noting that a lot of consulting companies focus on Azure. This is because of perverse incentives, but still worth noting.