This isn't the end. They are already hanging their hats on more investigations. And now some are saying Mueller is part of the cover-up. Once you have determined what result you want you are always more than happy to find new ways to get there, even if you have to delve into make-believe.
The stories will continue to impact the 2020 election also, but possibly not in the way the media intend. I could definitely see the continued pushing of the investigations as backfiring on the Democrats. If no collusion was found and that is the thing you have been harping on for 2 years, then how can you suddenly change to some other target without playing into the idea that this is all a witch hunt?