This might possibly a trust issue about the exchanges and Monero's existence.
Yeah, Monero has its name in the market but it has something to put into a question about the credibility of this coin build to the community. If this is all about a privacy issue, then it is better to happen like this. It is a claim that the community shouldn't have to ignore otherwise, we all become a victim to this.

If we can see a low trading volume it is because nobody has to give their trust. It is the investor's well but I don't see it why Monero has been ignored by many, in fact, it is one of the known coins in the market. Probably there is a reason behind which is untold publicly.