I am not sure what your question is referring to. Accumulation is one thing and big percentage numbers of coins staking or otherwise locked up in wallets, is another entirely. Since no accumulation is taking place in VRC -the top 100 wallets added 20,000 coins the past week, according to some research done and post here-, I believe you are referring to the fact that up to 80% of the total amount of Vericoins is currently in wallets outside of the esxchanges and mostly staking.
This is VERI good and...VERI bad. The good is because is reinforces the strength of the blockchain and, de facto, makes it almost impossible a 51% attack. Also on the VERI good side, it shows the confidence and commitment of the main stakeholders, which are staking their coins instead of trading them for a bit of profit like traders/speculators do. Additionally, reducing the number of coins available for trading, theoretically, will make the coin scarce and new buyers will have to pay more... this is being proven completely wrong by the market since VRC has been, and so far remains, in a downward spiral with great selling pressure taking the price to the lowest levels since launch... at which levels currently remain. So much for scarcity!
And this is VERI bad because, by definition and purpose, crypto currencies are made and design to be SPENT, not saved or kept. In fact, that only 20% of the entire float is available for trading, severely limits the actual usability of the coin in the real world. Since the valuation of the coin is so minimal, and, subsequently, the market cap total is so modest, this "accumulation" is imperative to protect the vulnerability of the coin to 51% attacks... as we show recently when only 8 million coins would have destroy the coin instantly. Naturally, if VRC ever reaches a valuation 5, 10, 100 times higher than current levels, it would be much more costly for an individual or a group to perpetrate a 51% attack and therefore the importance of the % of coins staking or otherwise away from the exchanges, will diminish exponentially.
Let me give you another scenario possible: With 20 million of it's 27 total million coins, in individual wallets, if anyone were to buy ALL the 7 mill available coins (an "investment" of $340,000 at current price), the actual trading of the coin will cease, it's price go to zero almost immediately and the stakers would have exactly that, ZERO value in their wallets. The coin would effectively be dead.
So this amount of staking is not healthy, obviously, or pricewise efficient. Much less is needed to maintain the blockchain and prevent the possibility of a 51% attack... any group could easily "buy" enough for very little money right now, effectively destroying the coin. A bit of a situation, indeed, if prices remain or, worse yet, if they go any lower.
Of course if they go lower, no one will have any interest in VRC, much less in liquidating it.