RX100 compromise the viability of Micro 4/3s ????

When m43 sensors start packing 24+ MP, I'm wondering if the current glass will keep up. I hear that the D800's sensor needs the very best glass to get the most out of it.

As it is, if I was not investing in a system and want to limit my expenses to $500 to $700, I like high end P&S like the RX100 or G1X. If I'm going to invest $2000 or more, I like a decent interchangeable lens system.

My problem with the NEX and EOS-M is the size and prices of the lens. Buy up the set I would want to work with, and I'd be staring at something that is closer in size to my DSLR setup than I would have wanted.