It really depends. The motivation among students is different. When we looked at research that shows why students are motivated to come, the students from some countries are motivated to stay and contribute. Among students from other countries, the motivation is that our education system is of high quality and stellar. They want to benefit from our education system, and then go back and contribute to their countries.
That's why I'm not suggesting that you do away with “you stay or you don't stay”. It's just about clarity. If individuals choose to stay, then they should be encouraged to stay, rather than face the penalty of getting rejected if they say, “Well, I want to stay, but you're going to reject my application.”
My perspective is about having clarity with respect to what we're saying to students. Don't say, on the one hand, “Are you going to stay? We'll reject you.” Just say, “If you choose to stay, then we will encourage you by providing the supports.”