<p><img src="https://images.cointelegraph.com/cdn-cgi/image/format=auto,onerror=redirect,quality=90,width=840/https://s3.cointelegraph.com/uploads/2023-06/140c6e95-f450-43ee-ace3-0336d3daad2e.jpg"></p><p>Bitcoin's market dominance index has failed to sustain above 50% since April 2021 — so will this time be any different?</p>