It actually has. But the continuous development and changes made by the community to let it grow addressed those flaws, and that's why we are here, right now, with BTC standing at thousands of dollars per coin. But well, lets move on to blockchain which is in all honesty, a system that isn't much noticed because BTC took up majority of the popularity. Blockchain technology seems like it could provide a whole new world to how transactions work, but only a few companies have started in its development towards it. Just past 2 weeks ago or so, China declared it's seriousness in adapting the blockchain technology and are fully focusing on its development, which I fully agree on.