Would Amazon help improve the MBTA?

In Boston's Seaport District, a candidate for Amazon's  "Second Headquarters.''

From Robert Whitcomb's "Digital Diary,'' in GoLocal24.com

With the announcement that Amazon will hire at least 2,000 more people for its Boston operations – and maybe 50,000 more there if it chooses the city for its “Second Headquarters’’ – it’s nice to know that the online mega-retailer has been talking with people in candidate cities about affordable housing and traffic/transit issues that would be raised by so many new people.

In the case of Boston, have the city and company discussed, for example, Amazon helping to pay for the additional MBTA service needed if the company builds the Second Headquarters there, and  helping to finance a lot of new housing to limit the rise in living costs in what is one of America’s most expensive places? Considering the huge tax incentives offered in order to lure the company, those questions are fair.