If the total crypto market cap goes into trillions by this year or next, then $5 is easy to achieve.
Once bitcoin and other top coins are making new highs, then do not see why Ripple will not.
You speak of cryptos going into the trillions like it's an easy thing.
But to put in in perspective, there's only ~$100 trillion money in the whole world.
I'm not saying it's not going to happen but I don't think it's going to be easy as you suggest and a lot of cryptos you see popping up now will not exist in 5 years time.