That may've been the case at Unimatrix-01, but Borg that were not around her may've continued to function normally despite here death. This is supported by the fact that the Borg Sphere that was pursuing Voyager continued to function (and attack Voyager, weakening it's armor) even after the Queen had died.
Dow and Union Carbide to merge: two companies that have profited from the deaths of thousands. By Martin McLaughlin. 6 August 1999. Dow Chemical and Union Carbide announced a corporate merger Wednesday, with Dow acquiring control of the smaller firm through a stock swap and assuming its debts, in a deal worth $11.6 billion.
Shares of Dow are down 24.4% while shares of DuPont are down 26.8% since the announcement of their proposed merger in late 2015. On Dec. 11, 2015 DuPont (NYSE:DD) and Dow Chemical (NYSE:DOW) proposed an all-stock merger of equals. The combined company will spin-off three independent companies over the subsequent 18 to 24 months after the closing of the merger.