I wouldn't be so sure about the down trends lingering on for much longer. I'm quite positive on the exact opposite in the near future. Wall Street, Fidelity and such, have already announced their moves towards crypto awhile ago. I wouldn't be surprised to see them jump in at the bottom of this down trend.
When that happens, I think that we will see a bull market unlike ever before.
TBH, I feel like such big players are behind this BTC sell-off that is pushing the whole crpyto market in a downwards spyral. All to scare people off into selling their coins for cheap.