They are more coins out there that has more potential than monero in terms of price growth, which i can see why people dont buy it and also because of government pressure. Most people out there invest in crypto because of potential money to be made and not because of privacy stuff.
Monero is still the top cryptocurrency, but their development has not had a huge impact, there is no more hype at Monero, just like other big coins like NXT, it's better to invest in projects that are always evolving and following trends