In ignoring the difficulties of small businesses, I wonder if anyone ever wonders where big businesses are meant to come from. Do they spring fully-formed from the head of a tycoon, like Athena from the head of Zeus? Do they appear out of the ocean, standing on a shell, long hair held modestly over their pubes and clutching their boobs, like Aphrodite?
No, they begin as a small business paying attention to their clients and employing a few people. After a while, if they survive, they grow into a medium-sized business, with many customers and a larger workforce, and eventually, with the benefits of bulk buying, squeezing down rates to their suppliers, and competing tightly on price and delivery (plus a great deal of luck and some preferential treatment by the powers that be as "a key industry") they become the leaders and/or monopolisers in their field.
These big employers can weather almost anything, smaller enterprises can't. If/when they go under, they won't go on to grow into big ones.
"Small businesses accounted for 99.3% of all private sector businesses at the start of 2017 and 99.9% were small or medium-sized (SMEs).
Total employment in SMEs was 16.1 million; 60% of all private sector employment in the UK. "