The experiment will likely fail if it the network is NOT upgraded and the limit eventually removed. The limit has already been reached anyway.
no. and no.
The first one is opinion. The second one is fact. I have seen plenty of blocks come through at 9xx kb, so yes the 1mb limit has been reached.
yes. and (soon) yes.
If Bitcoin is not "up"graded to centralization, then it withers on the vine because the ideological
delusionfever was that we were going to
decentrallyventure-capital scale this out to every human in the world. If we "down"grade to a hobbiest store-of-value then the network effects that allow us to exchange Bitcoins for other things fall away. In short, Bitcoin is a cooperative effort between mainstream media, financial powers, and the ideological geeks who got fooled (yet who cling to their delusions about MSM and TPTB defecting

). Without that cooperation, it never happened.
I want to try a new experiment. We freedom fighters and knowledge age workers go make a coin that remains decentralized by design without ideological dedication, and it scales to our virtual markets. We spin our economy off from the dying NWO industrial age morass of socialism, and we grow our economy over 2 decades to become the main economy by 2033.