the mouse that has but one hole is quickly taken

the mouse that has but one hole is quickly taken

proverb A person should always have multiple options, backup plans, and alternative resources available, as relying solely on one thing can result in inescapable difficulty should it fail or be taken away. I just think it's risky building an entire business off one product. What happens if starts to fail on the market. The mouse that has but one hole is quickly taken, after all. The best advice I can give is to diversify your sources of revenue, because the mouse that has but one hole is quickly taken.
See also: but, hole, mouse, one, quickly, taken, that
Farlex Dictionary of Idioms.

mouse that has but one hole is quickly taken

Prov. It is dangerous to always depend on just one thing, because if it fails you, you will not have any alternatives. Don't put all your money in a single bank account. The mouse that has but one hole is quickly taken.
See also: but, hole, mouse, one, quickly, taken, that
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs.
See also:
  • teach a man to fish
  • village
  • it takes a village
  • a bad apple spoils the (whole) barrel
  • a rotten apple spoils the (whole) barrel
  • a rotten apple spoils the (whole) bunch
  • a rotten apple spoils the (whole) bushel
  • bushel
  • a man is judged by the company he keeps
  • a man is known by the company he keeps