No there isn't good money in physics and chemistry or pure math. PhD chemists almost never make 6 figures even in high cost of living areas serving as a specialist. I made less as a senior scientist or a project manager in chemistry than I do as an entry level software engineer. I don't know how many physicists I've met who work minimum wage jobs, usually call centers, after their PhD/post doc (even finding a PhD is difficult, let alone completing one in 6 years).
FEM can offer money but you are competing against engineers who that's what they've done for years.
If you interviewed software engineers and data scientists right now I bet a third of them once were physical scientists/mathematicians who mostly regret their degrees or the fact they can't find survivable work using them.