Why bitcoin is the most dominant?
Simply because it was the first crypto currency that was in a successful path..
Why bitcoin is the most dominant among all crytocurrencies?
Because its the first cryptocurrency to gain social acceptance throughout the world.
Have read through the responses and this one is probably the closest one imho.
The "war" for dominance is and will be a
protocol war.
Not a design war
. Not a functionality war.
Newer ones will surface which are prettier (design) and faster (functionality), they may be added as medium of exchanges. But they will not replace BITCOIN as the main driver in crypto value.
The network (people, developers, miners) has already chosen Bitcoin. This is the one that will remain the bedrock protocol, no matter how crummy and ineffective it may seem in 10 years.
Compare it to
TCP/IP or SMTP protocols. They are not the best solutions for information transfer, but they were adopted and chosen as the bedrock. The industry then gives up looking for alternatives and starts producing based on the consensus. All additional layers are added on top.
Other comparisons are:
-VCR vs BETA
-DVD vs Laserdisk
-Cassette vs 8-track
Summary:
The consensus is finished. This was a protocol war, and Bitcoin has already won (as a store of value)