Restaurants will not go bust. Of course a few will but that is normal. But generally they will survive and thrive because there is a demand. Where there is a demand, someone will fill the demand.
In this case, their is a huge demand to eat in restaurants. Therefore, restaurants will fill that demand.
What happened when the Covid was high on the list and people were told the keep 10 foot distance between themselves and others? Didn't restaurants close up then? ;)
No doubt many did close because demand was less and supply of resturants equals demand. There was still a demand so enough resturants remained open to fill the demand. When demand increaed more resturants opened to fill the additional demand.