It is a normal development that Bitcoin is getting stronger in a sustained bear market. Alts are getting destroyed and people flee them in masses. But most dont want to leave crypto, so bitcoin is a safe haven for the time being. Just dont be fooled and think this is going to stay like that.
I agree. Also, it would not be surprising for Bitcoin to posses such characteristic since it's the pioneer coin, which almost singlehandedly introduced the market to the world, as well as, the coin that has the highest value and marketability compared to the other coins in the market. In the past decade, since the existence of cryptocurrencies, Bitcoin has held that throne and the crown, without any coin coming close to it, therefore, having the power to hold that much percentage of the market would surely be something Bitcoin can do.