Do you see Wall Street investing in Litecoin or Monero?
I'd ask you the same question about Bitcoin in 2011.
Look at this:
I hate to break it to you all, but unfortunately, rampant speculation, the hack attacks and massive price drops have already essentially killed bitcoin from the credibility point of view. No large company will willingly use a currency if using it risks their profitability on the scale bitcoin does.
This was back when bitcoin was a haven for criminal enterprise and crazy speculation rides. It was ludicrous to consider any respectable entity getting involved in Bitcoin and yet... here we are.
Do I think governments or Wall Street will get involved in Monero?
Hell fucking yes I do, especially once they realize how much better it is than Bitcoin.