The Cardano price is forecasted to reach $2.89801 by the beginning of October 2021. The expected maximum price is $3.62251, minimum price is $2.46331. The Cardano price prediction for the end of the month is $2.89801, after the Alonzo Fork. But what will make it achieve $ 5 and when will it happen? Will Cardano position itself to replace Ethereum and tackle the issue of huge gas fees? 
The truth is all of that so-called predictions are just mere speculation because no one knows what happens next, that's why it will remain as a guess, so let's put it that way.
Is it possible for Cardano to replace Ethereum? IMHO, I think that's not possible yet although Ethereum has some issues today regarding the expensive transaction fees, But it doesn't mean they can easily overturn the original smart contract provider. And let us also consider the fact that Cardano has several competitors in the market and I think that was not an easy task for Cardano to handle.