Of course, if a government wants to stack Bitcoin, he should not be forbidden to do that. And there is also no way to do that, as long as Bitcoin is censorship resistant.
As long as the governments only stack and don't interfere with development policy, everything is okay, but we can't guarantee that will stay this way all the time.
Bitcoin blockchain is Proof of Work and owning more bitcoins does not make that Bitcoin holder has any power to affect, manipulate or distort Bitcoin technical development
- it's very different than Proof of Stake altcoins. The only possible impact is on the market with selling pressure that can trigger market panic sell, and price can be dumped in short term while in long term, people can realize that market dump from someone's sales even a big Bitcoin whale, is good opportunity to buy cheap bitcoins.
Do people many times hope that they can have a time-travelling machine in order to go back to the past and buy cheaper bitcoins?
It's ridiculous if in the present, they have chances and simply don't take advantage of such good opportunities and cheaper entries.