Growing zero balance accounts is a concern as it indicates that the investors or pob holders are losing the interest in the tokenomics and they are either selling or not generating enough amount of #pob. If they are not able to generate enough tokens, I have already started an initiative for identification of undervalued posts and anybody can site the posts which are 4 days old and are undervalued and I would be really happy to support such content. However, if the stakeholders generated tokens and then sold it then it is a real concern.