It seems possible, but 37% by Bloomberg's video below seems a bit high, maybe it is just propaganda
[1] Video: https://news.ycombinator.com/item?id=30295272
[2] Poll: https://news.ycombinator.com/item?id=30295252
[3] Overemployed: https://news.ycombinator.com/item?id=29633083
However, while I am not, I don't see any benefits in holding two full-time remote jobs. I'd rather remotely freelance or consult for multiple clients. In the long run, that is likely going to be a lot more beneficial for personal growth, career and financial success.