With this daily average buy it is clear that the bitcoin mined per day which is significantly low at this time is not actually able to match the demand coming from mining. So yes we can simply say that the supply from mining is actually drying up and this to me is not that shocking because it was actually predicted that as mining rate gets reduce (more halving) then the market will have less bitcoin to actually supply easily and the supply will mostly come from the retail sales and buys.
Bitcoin institutional investors are late comers in this market and they will have to firstly buy newly mined bitcoins from mining. It will mostly be done on OTC markets but whales later will have to do their purchases on Spot market and it will be time for their buying force lifting price on Spot market up considerably.
Next future havings belong to far future and I understood what you implied, I think people will mostly forget about it soon. They are kind of mostly short-sighted and want to focus and discuss on things in short term. Generally I agree with you that in long term and after several future halvings there will be massively positive effect.