It’s great to see examination of compensation and work expenses within the field expanding, to that end, the 8/9/2018 edition of Ludwig-can.com published an article by Anya Wassenberg that takes a deep dive into the expense end of classical musicians.
Another treat is seeing the issues through a Canadian perspective; while most issues are identical for US based classical musicians, there are differences such as health care costs (especially related to repetitive stress syndrome related ailments).
Wassenberg’s article also covers a good cross section of musicians as well as mixing it up with musicians that focus primarily on orchestral work and those that split the difference between regular orchestra work, gigging, and solo work.
If you enjoy learning about expense end of on-stage stakeholders, then be sure to check out the pair of articles here on the cost of ownership for orchestra string musicians. You’ll be amazed at how much it costs to be a professional orchestra musician.