Jester David
Hero
Overall, no, they won't lose money. They just won't make as much. As noted above, there's merchandising and licensing to consider that are not mentioined in the box office gross. They'll make their money back, eventually.
The catch being the timing doesn't help the toy sales either. Since unlike other films there's no Christmas rush.
And there was a lot of news on how SW toy sales dropped in 2017.
And Solo is more of a grown up favourite character. I'm not sure his toys will do well.