Even the transgaming hack the launcher, they get not much of benefits. The difference will be the wine is free and transgaming is for fee. Strong communities did not fear the ibm or apple, instead they helped them. Wine is a strong community, with many users from many oses. Even he you make the launcher under mit license, no one can break you. On one can break wine he it is entirely bsd-ish, but i am asking only to change license of the launcher, not libraries.