Back in 2017, as Ether was on a path to 120x from $10 at the start of the year to $1200 12 months later, many speculators thought that Ethereum had a shot at a larger market cap than Bitcoin. Even though Ethereum got dangerously close, this never came to fruition. The closest it came was on June 18th, 2017 where Bitcoin had 37.84% dominance within the cryptocurrency market and Ethereum had 31.17% of the total market share. 

Many still believe that there is a possibility of Ethereum or another coin gaining a larger marketshare than Bitcoin, hence the term the Flippening. I believe for this to happen there must be substantial utility and activity on the chain. This can be attributable to stablecoin volume, gaming, or even something we haven't even considered yet but I do believe it is possible. I like the train of thought for Ethereum flipping Bitcoin due to its potential for bonds and tokenization which is a much bigger market than gold. Something like $80 trillion to $9 trillion. Even if Ethereum was able to pull in 1% of that market it would already have a larger market cap, theoretically, than Bitcoin.

I'm interested to hear everyone's thoughts on which chain could potentially flip Bitcoin's market cap and why.