Can the push reach the new highs like 600k?
Bitcoin has dropped lately. It has just started to recover. In such periods the ones preaching an even bigger drop (the FUDers) are the more vocal ones.
If Bitcoin will have a sustained growth for a while, the dreamers will kick in, telling about 500k, 1M and maybe even bigger numbers.
So right now your numbers are "a blasphemy"
Imho yes, 600k is not an unrealistic number. The only problem I see is the timing, that could be wrong. And I think that I know why too: Libra may have no effect at all.
I am going to be realistic to be quite honest. I doubt we will ever see a 600k USD Bitcoin, well not in my lifetime anyway. The fact is people can make a crap ton of money shorting Bitcoin, so why would they even bother to try to pump it up? Only if there was a huge influx of people coming in to buy it in droves and holding it, would there be that kind of a chance, and even then the Powers that be could do everything in their power to manipulate the market and keep the price low. Look at the price of gold for example, it was held down for years and years. I think they will try to do their utmost to keep the price of Bitcoin low so that they can accumulate and own in the end most of it. This would technically make it less and less decentralised as bigger fish would own the majority of it like Rich people do with every asset class.