A study conducted John-Paul Thorbjornsen has found that while bitcoin's percentage of the total cryptocurrency ecosystem is slightly above 50%, ...
source https://www.google.com/url?rct=j&sa=t&url=https://www.cryptoglobe.com/latest/2019/03/bitcoin-s-dominance-in-the-crypto-market-is-of-over-80-researcher-finds/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNFoVXEh5gS3fjE9K1_SorGv-IwRvw