because you wouldn't buy gunpla at toysrus since it would likely be the most expensive place to get it now that gunpla's primary consumer isn't children watching Gundam on Cartoon Network, but Gunota and relatively normal people age 20 to 50.
All these nostalgiafags wanting it to be in toysrus again don't seem to remember that kits like MG RX-79[G] were $50 at the time and bought it because didn't know any better. You wouldn't do that now because you'd research where to buy and buy for whatever was the best price/distance ratio that satisfied you. Basically you wouldn't shop at toyrsrus if that MG RX-79[G] was still going to be a bloated $50 (and I guarantee it would be with all the bullshit costs associated with selling in toysrus).
Also toysrus was doomed anyway.
Since 2005, Toysrus has been trying to clear its debt by doing the equivalent of that cartoon where the character is using a small bucket to scoop out water in a row boat that's taking on water faster than it can fill.
TRU's sales and profits never put a dent into the massive debt it had along with the fees it was paying to the 3 entities that owned it Bain Capital, KKR, and Vornado.