If a large firm fails in terms of its marketing strategy, it is easy to recover the failure. But how is this possible by smaller firms?

But smaller firms also do their marketing in the market....Suppose for instance, if I consider a small grocery near my building, they even do marketing by publishing cards with home delivery. They supply those cards to the tenants of different buildings. Thus even a small firm has a marketing strategy. 

Sometimes, their marketing strategy also fails hence we dont even get recognized with that kind of a firm. 

A very good example is Lulu supermarket..It was actually started as a very smaller firm but now it is a well established firm in most parts of the world.

How many small firms have been witnessed launching their marketing strategy. 

Normally they assume Sales and Market as same and directly try launching their Sales Channels and remain small firms. you would have asked this question about mid sized firms.

these markets can be unfrozen through programmes ranging from loan guarantees to capita infusion and regulatory charges.but usually not parmanent.