We've got scalability already in the stable coins if you would consider that. Although, bitcoin remains the coin most crypto enthusiast look up to but, there are phases to the currency and network. One can't rush the other. Its a highly scares commodity and to have its fit value, we don't need to rush it but, allow the laws of demand and supply play Its part in setting the ask and bid price. With a few bitcoins yet to be mined, the issue with scalability and volatility will still remain. My speculations puts me at a point of a scalable BTC when the last bitcoin is mined.