What will happen with time is that most of these malls will become markets/shopping centers/stalls like etc. The rents will be drastically reduced, the shop spaces will be occupied by kawaida businesses - Njung'e African Dishes, Makerenge wines and Spirits, Swenani Fish Inc., Wamunyota General Merchants (Transport, Plumbing, Photocopy, Cyber Cafe, Plots for Sale, Houses to Let, House girls to and from Dubai,
Chai loko, Auctioneer, etc.). And life will go on. For tenants and customers!! For landlords/mall owners especially the ones buying the land at inflated prices, watalilia kwa choo!!! Some Malls of course will survive and will continue housing luxury stores and charging premium rent.
On a lighter note, the name "Mall" should be controlled! Every Tom, Dick and Mary (1/3 gender requirement) are calling whatever kind of building they come up with a mall. If there are shops, it is a mall!! I saw one next to the Weighbridge on your way to Thika calling itself Adva Mall or something like that! I was like "Seriously???".
Never count on making a good sale. Have the purchase price be so attractive that even a mediocre sale gives good returns.