Should businesses do anything they can to make a profit

Should businesses do anything they can to make a profit?
It is claimed that the only aim of business is to make a profit.
Moreover, it is thought that running a business without making
benefits makes no sense. Actually, from an economic point of view,
the statement "businesses should do anything they can to make a
profit" is
thoroughly true. However, from a moralistic and legal point of view
that statement seems not quite well sustained.
I consider that to make a profit means a person deals with business
to be as flexible as possible. It means to put new technologies in
operation or to explore new scientific areas. Furthermore, to invest in
individual improvement of employees` professional skills and to be
awake of the global market tendencies are things absolutely
necessary for the modern management of business.
Unfortunately, business is not a quite fair game. It is well-known
that sometimes businesses have their own "dark" sides such as tax
evading, illicit trade or disloyal competition. In addition to this,
many employers make their employees get overworked without
any extra payment.
Another point worth mentioning is that businesses do not care
enough about environment and they frequently pollute it. Law in
most countries prosecutes these actions, although some businesses
keep breaking it without any punishment.
I consider that businessmen sometimes forget about utter limits in
their ambitions to make a profit. Generally speaking, I do agree that
businesses should do anything they can to make a profit but do not
forget that anything does not mean everything.
If I ran my own business I would do it in a way that would
neither ruin my name nor corrupt my conscience.