For the holders of the tokens that participated in the sale of the ICO, you can offer additional profit, except for the growth of the value of the token on the exchange?
What profit do you want yet?
I think apart from the growth of the price of the token on the exchange, only dividends can bear profits. But as you yourself understand, such projects can not enter the stock exchanges because of the crisis. So only the redemption of tokens for the growth of the price or the sale of the product will give growth to the holders.