Valve is one of not so many companies I respect for what they do and how they do. I'll buy any their product, not just to support them, but also because I know I'll get a good finished product that they will continue to support. I hope they'll never become public company, that care only about stock prices and greed
A recent Reddit thread suggests that a simple "pretty please?" might be all it takes for Valve to bend its own rules – and that's part of what makes Steam so beloved among gamers.