Don't get me wrong; I'm not saying Dogecoin will pivot into a serious currency. I'm talking strictly relative growth here, and BTC is currently over 1000x bigger.
I think it'll become a defacto tipping currency of the net, and there's plenty of room for the market cap to grow to support just that niche, if it goes relatively mainstream.
As far as VC money goes, the infrastructure that's being built will likely not remain Bitcoin exclusive, so I see it more as a rising tide lifting all boats.