This is a good review. I think movies are so focused on box office right now that good ideas (and this film has a good idea at it's core) are sacrificed to the need to have a great opening weekend. This movie looks like a (slightly more attractive) Marvel movie and I suspect the director wouldn't have said no to a franchise. He won't get it (and wouldn't care) but it's symptomatic of the current state of cinema. Everyone competes against Star Wars and Marvel.
This movie is obviously a 'think piece', and stood no chance against 'Avengers Go Shopping' or whatever those things are called.
I give you my fullest guarantee that Valerian will be a cult classic in about five years.