The number has to go up for it to succeed. Otherwise, it wouldn't be a safe haven against inflationary theft. It also wouldn't be a scarce asset, since that's exactly what scarce assets do. People have to want it. The incentives are designed to bring in everyone. That's the only way to finally end the corruption.
Also, the whole point of #Bitcoin is that everyone can participate without gatekeepers. Keeping banks out would require us to essentially destroy the primary benefit of Bitcoin.