This is not a problem of a lack of investors, but because some people do not want to enter the market due to unstable price conditions. The crypto market in 2020 will be bright. Everyone certainly agrees with this. The price of Bitcoin will go up and be followed by several potential altcoins.
Investors are there, but they have become more mature. No one is ready to invest in a shitcoin, just to make its promoters rich. The current bunch of users do proper research before investing in any asset and coins which are not adhering to timelines and having shady practices are immediately red flagged. Copycats are a big no-no in the present market. Unless an altcoin has something unique and innovative about it, people may be wary of investing in it. But good coins continue to get investment from experienced users.