The name "Tencent" is based on its Chinese name Tengxun (Chinese: 腾讯), which incorporates part of Pony Ma's Chinese name (Ma Huateng; 马化「腾」) and literally means "galloping fast information".
So maybe it's just concidence?
Their first product was also a messenger software so I don't see why they would name themselves "ten percent". The investing thing came later.