Because maximum projects are Eth based and currently Eth is increasing day by day.
I think that everything depends how useful will be a coin in future. The project must be useful to create demand in token.
There are ecological projects that protect a nature from CO2 pollution. It is very important to fight with global warming because we live on one planet.
https://moss.earth/blog/ here is written how it is important to protect a nature and what already been done.
I checked the price of MOSS. It is growing. It means that a lot of people understand how it is important to protect a nature and buy MCO2 token.