In my opinion it's a good thing, because by purchasing Bitcoin, governments will help splitting BTC among more investors, balancing the forces in the market. It adds more competition among whales and institutional investors, preventing that only few individuals control and manipulate the market.

Ordinary people will benefit from this by being Bitcoin investors too, as with the increasement of demand, Bitcoin price will rise, impacting positively their personal holdings. The economy of the countries involved in Bitcoin purchases also have the possibility of improving, although it's not a guarantee, since management skills are very important on this matter and by solely having money doesn't mean anything at all.

For that reason, I prefer to think about Bitcoin's impacts on the personal sphere, on each adopters' lives.