I do not think like this. Bitcoin will still be a digital currency in the future but it will have many legal rules to control and now bitcoin has got many big communities behind it. It's not easy to be dead.
That's right, In my opinion a bitcoin will still be there in the future with the great price.and hopefully all the countries taking part to use it as a means of payment. I am very hope that.
Bitcoin is now slowly being accepted by countries like Philippines, Nigeria , Japan and others. Of course this acceptance will be followed by some legal conditions and policies so that illicit activities will not occur especially money laundering that will destroy the economic condition of a certain country. This rules and regulations including agency monitoring how bitcoin is used is a good sign that bitcoin is near the mainstream and those policies will protect us from scammers and hackers that are planning to take away our btc.
Even if there were regulations which made it harder to use Bitcoin, we would not stop and it would continue to live on. All we need is internet and a connection. Wallets can be connected over the TOR network to bypass government blocks (they already are - checkout Monero and DeepOnion!).