I think with the increase in BTC, of course this will affect the prices of some altcoins in the market, but it seems that it will not affect investors' interest to invest in ICO, because we know for sure with the increase in the price of bitcoin, investors will invest more in bitcoin or altcoin which indeed already have an exchange market instead of having to invest in ico which does have a fairly high risk of fraud.
If the price of bitcoin rises suddenly, it is clear that investors will not see the ICO program again, because they prefer to see opportunities in the market rather than in ICO, because there are so many benefits to be had if the price of bitcoin can go up suddenly arrived.