참고로 계정양도는 계약위반입니다.

물론 과연 걸릴 수 있을까도 궁금하지만

우선 EA경우에는

- Unless expressly authorized by EA, you may not sell, buy, trade or otherwise transfer your Account or any personal access to EA Services, Content or Entitlements, including by use of auction websites.

아이디 거래 및 양도를 허락하고 있지 않고있고..

물론 스팀도 상황은 같습니다.

You may not sell or charge others for the right to use your Account, or otherwise transfer your Account, nor may you sell, charge others for the right to use, or transfer any Subscriptions other than if and as expressly permitted by this Agreement (including any Subscription Terms or Rules of Use) or as otherwise specifically permitted by Valve.

GOG 같은 경우에는

You can't sell your GOG content or account. You can gift GOG games or videos.

즉, 판매는 금지되있지만 하루에 5건까지 게임이나 비디오를 선물로 보낼수있다는 것 같네요.