Is it real if Cardano grows in market cap but the price will remain unde 10$?
The current all time high for cardano is actually over $1 so there is some real room for growth here.
But it is a big market cap coin and it'll be pretty hard for it to move too much on the upside. It's probably not going to exceed LTC or ETH's market cap for the long term, even though it definitely may if there is enough hype in the short term.
So yeah, I'd say that $10 is a good ceiling for now, perhaps even lower at around $3-5. Realistically you won't see prices over those figures.
All these coins with market cap "problems" will always show the most glaring losses. Let's talk about Ripple for example. Now I firmly believe crypto is in a huge, long-term bear period. I thought it would not come so soon, but every week that passes shows more and more signs that the long winter is here. If anything, we could even be headed for lower lows, and alts like Cardano, because they are not used outside of their ecosystems, might even drop more. After all 20 cents to 10 cents is not so much a 50% drop but a further 10% drop from it's all time high.
But if you're learning to learn, then the lesson is you hold, if you believe. That's the self-fulfilling prophecy. We might wait 2 years but a return to ATH has to be there.