I suspect that they had to invest in something. The US government can and does threaten a company with punitive taxes if their retained earnings honeypot gets too large. It is a matter of spending it or risk having the government take some of it away because you didn't spend it. It happened to a company where I used to work.
Given the direct access to a fiber trunk line, and the fact that they were already a tenant, it is probably a good move for them.
"Democracy is two wolves and a lamb voting on what to have for lunch. Liberty is a well-armed lamb contesting the vote." -- Benjamin Franklin