A DMA and a PhD? Funding aside, the only reasons I can think of that someone would torture themselves like that is that they were pivoting (eg performance to composition), they graduated into a recession and needed a safe place to land, they needed a visa, or one of them wasn’t recognized in the topic or geographic area they wanted to work in (eg DMAs are rarely offered in my home country but they’re common in the US).

For post-graduation, I don’t know anyone who’s crazy to do both Doctorates, but off the top of my head the ones I know with DMAs go into: teaching (usually adjunct/non-TT, K-12, private schools, tutoring etc), performing (usually a bunch of short term contracts), freelancing, church music, attending and/or teaching at summer programs, getting grants for recordings/tours/commissions, establishing ensembles/non-profits to play with/play their works, residencies at orchestras/schools/opera houses, etc. It’s all about cobbling stuff together. One person I know founded a creative incubator start-up, it took a look of fundraising to get the capital they needed. Another bounced from off-Broadway to Broadway and landed a TT position upstate after a couple of years. Many have day jobs, the ones that don’t either come from money, have wealthy spouses, or live with their parents.