All of the current vendors will have a space to do business in the 3 buildings to be built?
I would bet, heavily, against that actually happening.
The rent will be much higher, there will be much less of a place for multiple locations offering essentially the same often shoddy goods. There will be less business done as prices go up to cover the raised costs to do business, and many won't be able to wait if it goes on too long before reopening. I posted earlier not to underestimate Dominicans and what they are able to do and withstand but even that has limits. in combination with other detrimental factors. Also, the intention was to not allow the majority, or all, of the previous vendors to return, instead, the spots will have all been given to cronies and/or those connected, and willing to pay the new rents.
Also, I don't believe that the Gov't and or the builders are acting in good faith. In my, approaching 3 decades of, experience in dealing with both and in rentals commercial and residential that when an entity refuses to operate transparently and manages to convince tenants to move out, they almost never get to move back in. There are many potential reasons for this but it normally boils down to 1. It was never the intention to allow the previous tenants to return and 2. The previous tenants can not afford the new rents and have almost certainly found new places to live or work so it's moot.
I find such, generally illegal, tactics to be beneath contempt and the people or companies, including Gov'ts, that operate that way are the lowest of the low, scumbags.