Not a single profitable company in the world has to increase revenue to achieve profitability. By definition, they are already there. The risk faced by all companies is that poor strategic decisions will cause a decrease in revenue, eventually leading to a loss of profitability. But that is a totally different statement.
That is essentially the definition of a blue chip stock.
No, that's not true. A company may have been profitable for many years, but there is still risk of it becoming nonprofitable anytime in the future.