It is not impossible for Dogecoin or Shiba Inu to reach the price 10 USD, but if you look at the current prices and market capitalization, it is highly unlikely.
I would say, it is more likely for Dogecoin to reach the price 1 USD than for Shiba Inu, because currently they have similar market capitalization, but quite different prices, because of amount of their coins.
But I would say it is almost impossible for DOGE or SHIB to reach the price 100 USD.