Sorry to hear this! At the risk of repeating what others in your life may have told you, have you considered working for a new team/company? I find it of utmost importance to find a job/career that is intrinsically fulfilling and rewarding to you. Extrinsic rewards like money are great, but you can only slog for so long for only money before you burn out.

I've personally been fortunate to have been able to form a network of a bunch of different well-connected folks so I can always choose who I get to work with in the event that companies shut down or get acquired or such and such. I feel the value of such a network does not get touted often enough.

Not everyone has that option, as you say. My career was in a similar dead-end situation at one point; there was no immediate solution - nothing was going to make tomorrow or next month better than today.

Finally, I accepted the solution was long-term. I made a long-term plan - to do what I really loved - and focused my attention on that, and slowly built up the resources, skills, etc. for that plan. One wonderful side effect was that the dead-end part diminished in my mind; sure, I still had to do it, it still sucked and there were some awful days, but it would pass. I didn't matter so much; those people didn't matter; it was like one of those movies where the kid knows that someday they will leave the depressing, dead-end town they are stuck in today.

I hope that helps a little in your situation! Good luck!