I think that "SF can sweeten the deal for them", while true in theory, does a lot of work in glossing over exactly how it could sweeten the deal for them. By offering higher pay? Or perhaps by somehow providing more affordable housing?

Which (as I understand it) is kind of the topic of this whole sub-discussion: it is not easy to find a solution which will sweeten the deal for them (aka: make it economically feasible and attractive for low/middle income people to live and work in a city with a housing shortage and high housing costs). Rent control is one such proposed solution. It has its benefits and drawbacks, of course, as evidenced by all the debate about it here.