$4)$ In $2017,$ Amazon made its first major foray into bricks$-$and$-$mortar retailing with the acquisition of Whole Foods Market, the up$-$market supermarket chain. The acquisition followed Amazon$$s entry into online food retailing with Amazon Fresh. The shares of Kroger, the biggest supermarket chain in the U$.$S$.$ fell by $11\%$ on news of the deal. How might Kroger use the competitor analysis framework outline in Figure $4\mathrm{.}4$ to predict Amazon$$s competitive strategy in the U$.$S$.$ grocery market.