The performance of Shib is unbelievable it's still keeps increasing, nobody knows what will be the future of Shib but seems Shib is trying to reach the price of Doge. I know it's impossible but the pump of Shib is crazy these days. About Musk, I think Musk is not the behind of this coin, the creator of this coin is just a fan of Doge I think and luckily his coin made him rich.
Impossible? It depends really... SHIB could definitely eclipse the market cap of DOGE. As for price... if the people running SHIBA INU decide that the price is that important, they could do a huge coin burn. They have already done it once. This is not to say that I think that they will actually do this but just advocating that 'impossible' is just relative to their goals.