Real question -- is there a true need for all that Lab/Office space that is now starting to become the replacement of Office for the development community?
My guess is that as has happened before -- the exponential growth continuing forever syndrome has set in -- everyone thinks every parking lot will now become a Lab/Office for another Moderna. However, while currently the vacancy rates in Kendall and the Seaport are very low -- there is a lot of proposed buildings in the pipeline.
Meanwhile the demand is currently unfulfilled for the much less sexy and to be honest less lucrative bio-industrial buildings -- these will be needed for the Boston Area to prosper in the longish-term and continue as one of the key hubs of the Bio/pharma world
Note that Bio-industry kind of buildings are: lower, with bigger footprints, need for more access for vehicles [e.g. loading bays], consume more power, possibly more water, and will employ a lot fewer people per unit area than Lab/Office. Oh yea -- since they are more like Amazon Shipping Centers than a typical Kendall Lab -- they don't need fancy landscaping or have much need for a whole lot of retail and places for smoozing and playing foosball.