Old coins or new coins will not be able to affect the price of Bitcoin. Every coin has its own investor segment, there are people who are more inclined to invest in bitcoin but some are speculating on altcoin. In my opinion this segmentation makes the price of bitcoin not be affected by the emergence of new coins or the development of old coins
On the contrary, this segmentation affects Bitcoin in an indirect way. If there are no altcoins, the market will be focused on Bitcoin alone and the money will only flow to Bitcoin.
which means the growth of the value of Bitcoin is secured, unlike right now. We have a thousand of altcoins, that leeches investor money caused Bitcoin to lose its value by much.
I was wandering how does other coin affect bitcoin.? Does it make the bitcoin value highier or lower? How can we make another cryptocurrency? How much money do I need if I will make another coin? Should I be a programmer or a developer to develop a new currency?
Creating altcoin requires you some knowledge in the programmer, even though you are forking the code source. There is no fixed price in making your own altcoin, creating an altcoin only needs your knowledge on the other hand building it requires a lot of money.