Waves never huge promotion their own side. But this is right it was promising coin and since 2017 its gradually very popular when those guys invest they got big profit at the end of this year. Waves last price is 17$ most provably. As per as its a big dex platform so that peoples trust this coin. Right now price down below 1$. Yeah that time a lot of prediction likes it will be next eth or beats eth. Waves development something keep silent no updates from many months. In 2018 middle its price gradually down i have not seen any pump.
Almost every altcoins are down since 2018 although waves was very popular back in 2017 and growing wavesdex but right now there are already too much good coin that can compete with waves, so it's just a battle of advertisement and how good the marketing skills from the teams to make a hype of the coins and make a powerful demand to pump the price