Board Game Arena

It is obviously not against the rules to penalize anyone you want, but there is no etiquette it seems when playing. Example: freezing the highest player not the lowest, etc. this seems to be more of an issue when playing against an obvious team. It takes the enjoyment out of this fun game significantly. This is happening often, and is ruining it for me. How do you deal with this? Any suggestions?

Etiquette in this case is totally subjective.