Not soon, even dash can't, dash is no.1 anon coin, monero is no.2, maybe ethereum has the chance to replace bitcoin, but maybe in 10 years.
Dash is not even close to being #2. Coinmarketcap.com is valuing the supernode capital on an MTM basis. If that capital, and the stealth instamined millions were to float on the market, dash could drop 90% in a day.
All of the monero is floating. The cap numbers for Monero are actual, legit numbers.
But yes, not soon. I think somewhere in the 2020-2024 range it is likely that 1 XMR = 1 BTC. But both will be at a much higher fiat/gold price by then.
For me bitcoin's price will have to go down substantially for XMR to catch up if ever it really has a chance to catch up. Why do I think this? Because for XMR to be the no.1 capitalized coin in coinmarketcap.com, a big group of whales from bitcoin must first unload a big part of their BTC and load up on XMR.
Now that XMR is discovering its own market niche people will start to form and build an economy around it. This will take maybe a shorter time than it did forming bitcoin's economy in the dark market. But beware to the community of Monero. You have to accept and embrace the fact that XMR might be seen as the "evil coin" used by criminals, illegal drug peddlers and maybe also terrorists to cover their tracks. This could be an impediment or an advancement in its development depending on your point of view.
There was a reason why Darkcoin dropped the "dark" to be viewed as a more "legitimate" alternative to bitcoin. Maybe they did not want to go to the dark market road. For me that is a big mistake. Monero is going where no one is willing to go. That will push for more advancement of the coin.