Well, there are several ways to interpret this data. First of all we can applaud the jobs being created by Toyota (total car sales have gone up by ~20% which is very healthy); and hope that if someone does lose their job at another plant can be easily hired at IMC.
My fear is the homogeneity in the market. I personally don't think the new Corolla is a great car; I don't think they offered enough and cut a LOT of corners. Yet the market seems to have fallen in love with it (which is fine). But to such a degree that I fear other manufacturers may pull out, new ones may fear entry, or the existing companies may cut costs in order to compete with decreasing sales. They see the tremendous success Toyota is finding despite their "laziness," and will cease their efforts to innovate and keep on reintroducing the same junk. But not only with other manufacturers, but with Toyota itself: as it stands right now there is no incentive to improve this sub-par vehicle (no new engine, inferior materials, poor safety, etc etc etc), becuase are seemingly blindly buying it in droves.
I hope that other manufacturers react positively to this data. Swift sales have declined by 25% (which is huge as well); so I hope Suzuki does away with this old design that was obsolete in 2010 and introduce the new updated model.
I hope that this is a major wake up call for Honda. That despite the new redesign of the City; they really haven't seen an upturn in sales compared with previous years. I hope that this forces Honda to introduce the redesign for the Civic that was done in 2013 (though in all honesty, I'm not a huge fan of this car and hope the next Civic is better...in fairness that is out of their hands though). But more importantly, as a consumer looking for a non-primary vehicle: I hope Honda decides to compete in the lower end of the market by introducing a small, well-built hatchback to compete with the import market, the Swift, and Faw's V2.