I don't know if the research will get down to one thing or a multitude of treatments or how quickly its going to be, things are going quite slowly its a very complex disease. Nothing is in development yet directly targeting it due to a lack of accepted biomarker and true understanding. Its not that we don't know a lot we just don't know which bits matter and whether existing treatments work on them.
Its pretty concerning, that there is no treatments let alone a cure, because every infection can cause Long Covid. Its about 13% chance every time you catch Covid. There is no lasting immunity to Covid or Long Covid that we know of nor genetic commonality. Current CDC projections suggests everyone will have this disease in their life and recovery is very rare. We are looking at a worldwide disabling event and not a lot of research money to get to the bottom of it from governments nor any social support for the 100s of millions already disabled by it.
We already know that disability in general tends to be rendered invisible unless it's a really widespread condition, and long covid symptoms are themselves invisible to others.
This is why many dysautonomia clinics are seeing long covid patients. If long covid patient shows damage to small or large nerve fibers tested by EMG, skin punch and QSART, there is some treatments in the pipeline. WinSanTor is working on a cream which uses pirenzepine. In early studies it reversed nerve damage. It is being tested on diabetic neuropathy. Also, applying dysautonomia life style changes could potentially help people cope right now.
I have spoken directly to a chemist who took oral pirenzepine and cured his dysautonomia.