It's quite a high time for crypto industry or any kind of industry. TBH, it won't take that much time because there will be more development in this field and sooner or later, people all around the world, will be able to use bitcoin or any potential coins as a payment gateway and every industry will adopt it. So, it's ture that crypto is needed more time from what we expect, but 50 years timeline isn't suitable for this as crypto become more popular within a decade. As a result, we might need to wait for another decade, IMHO.