Re: "not in the best interests of shareholders"
While you're right to be annoyed, the duty of a company's board has always been to its owners, which can often mean a quick sale for cash now. and screw the future. The current trend in the US is to market concentration with the expected higher prices intended to pay for the acquisition.
Things started changing in the 1980s with market deregulation and changes in accounting and tax law which made debt-financed buyouts possible and then atractive, because debt can be registered as a charge and capital gains is taxed less than income.
I think we can assume that some kind of merger here will go through.
