Steam Cloud is one of those features that I never knew I wanted until I had it, and now I look for it when considering what games to buy or play. For those who do not know/use it: Steam Cloud is a cloud save system for your Steam games’ save files. Just like you can re-download your games at any time, you can re-download your save files at any time.
Steam Cloud lowers commitment. I can try a game and not feel the need to finish it “now or never.” Granted, that probably increases the number of “never” finishes, but it substantially lowers the number of “never” starts. Anything that decreases the cost of exit effectively decreases the cost of entry. It definitely lowers the number of games that I leave half-finished on my desktop, along with the games never started because of all the ones half-finished.
As a related economic story that has been going on for years, consider French employment law. The harder it is to fire someone, the riskier it is to hire them. The French unemployment rate has been hovering around 10%, above 20% for youth unemployment.