Perhaps chasing windmills?
Corinne, if there's that level of contention in your field - and even allowing for Sturgeon's law ("90% of everything is crap") - that means you're up against 20-30 serious competitors for each vacancy; not that that will come as a surprise. That's a hell of a lot of hard work and emotional investment (not to mention repeated gut-shots) before you succeed. How else could you put your skills and experience to lucrative work? Are there other, related, fields where the income's similar, but you can shine above the others because of your unique background?
Just a friendly thought.