Im not saying they pay them well or not. Theres just not a comparison on comp they could do. That you don't understand the power dynamics between that is something you will hopefully learn about the world as you become more experienced. Apple would just offer more at the end of the day.
I understand, and this is timely in the context of Meta making $100m offers. I have no data on this, but I would be highly surprised if Apple offered anybody more than $5m/year. Masimo has that much money.
Could Apple go higher? Sure, but again most people who like their jobs are not going to leave once their needs are met.
From a competitive standpoint: Masimo has lost $8B in market cap during this kerfuffle. It's entirely possible it would have been rational for Masimo to pay these employees higher than Apple possibly would go in order to not lose those billions in value.