If you were involved in crypto during the last 2 years you wouldve done best just to stay with BTC in order not lose too much or to have good profits. Bitcoin has showed to be pretty stable for such a volatile asset. Trading BTC is a big challenge because its very hard to spot the right trends and holding is long-term much, much more easier and proofs to be often the most profitable solution as well. Just HODL it!
However, Bitcoin growth compared to other markets may be many, but most people invest in crypto most want their investment to increase even more. So most of them will invest in altcoin, only a few people with big money will invest in Bitcoin