Can someone explain this to me please?

People can afford $200 ... $400 Bitcoins ... $900 bitcoins... and with all the money in China floating around, its not too big of a deal for people go buy $1000 bitcoins.

You reach the $1000 mark and you've got Snoop Doggs buying up 20 or 50 of them .... but that's Snoop Dogg.  He's a multi millionaire. 

People have been able to afford to buy in to Bitcoin up till now...

Who the hell is going to afford to buy into Bitcoin at $2,000 ?   $5,000 ?   $10,000 ?

At some point shit is going to simply stop shooting up. 
I know you can buy bitcoins in divisible amounts.   But 90% of the public has no idea they can do this, and Im not even certain that someone buying 0.00004 BTC at $10,000 is going to push the price up at all. 

So my "Speculation" ?   That we're reaching a point at which human beings can no longer buy in to Bitcoin enough to keep pushing the price up so quickly. 

Can someone please explain to me where the money would come from?  Even if India gets on board ... how the heck will their participation affect price? 
Its not like a bunch of people in India can start blowing money on $5,000 Bitcoins .

Can someone explain to me why people here think a rise from $1,000 to $10,000 could even happen at all, let alone quickly?