Bitcoin is default profitable and if you choose right altcoin for investment you could make some more money. Do not compare altcoin with Bitcoin. If you huge amount of capital you could split you investment like 60% of Bitcoin and 40% of other altcoin.
Many guys do not deal with Bitcoin only due to its high price. For them, it is much more profitable to invest money in different cheaper tokens. Sometimes (and it happens often) cheap altcoins give great profits.