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Would be nice, but I don't think banks would purchase ripple on the "open" market. But just straight from ripple labs, at a discounted price.

They are all working on coins of their own, a Japanese bank launched its own coin yesterday... so that's where were headed, what with the SWIFT consortium working intensely on creating an alternative to Ripple - banks don't accept outsiders IF THEY DON'T HAVE TO, because they need some bailing-out. So in that connection you might be correct about the discount ;)
In fact however, banks couldn't care less about the price of Ripple as they needn't buy it, only use it. It is a transfer token.

if "banks adopt it" that means we are analysing based on "NEWS" now, not TA, and honestly, i find it a bit exagirated , 500 marketcap? the entire crypto is fighting to hit one 800 for a year now, that means if ripple hits 600 billion, Bitcoin should be at least 2 trillions....

Exactly, that would mean that whole market cap is about to crash.... I mean there is possibility that it will reach that price , but right after we are going to crash hard.... Maximum market cap for crypto as we see it's 5trillion which is about 5% of global market cap, at this moment a lot of regulation , and stupid money will go away.... It will be massive crash before major companies in cryptospace will estabilish for good.

Elliott was a clever man who however did not create the universe. EW principles apply, but exotic happenings can entirely delay them in the time axis, or make them come undone.
For example, I doubt that the market would survive a nuclear war or an asteroid hit, though @haejin might observe that in the end, human psychology remains the same - oscillating between greed and angst.
While what we're witnessing now is just lots of additional waves being generated along with fear and loathing for a month, and then all simply resumes - as @haejin likes to say, the overall count will remainss the same.
As to market cap, it went up by about 1500% last year. Let that sink in.