Exactly!
To draw your comparison even further: Noah has a couple of boats. He has one Litecoin-boat, one Bitcoin-boat, a Dash-boat and so on. You have to buy a ticket to get aboard, and you can even buy multiple tickets to bring more of your possessions on this boat and then the price of the tickets get higher and higher and more and more people want to go on the boat. And more and more people who have not yet bought a ticket, are starting to realize that the its raining, and maybe that it's raining a bit too much, but they don't like Noah's boats, so they try to make dollar boats, but in this comparison, the rain represents the dollar, so they are trying to make boats out of water. Also, sometimes Noahs boats get over-hyped in the media, so many people bring too many possessions on the boats and then the boats roll over every now and then and a lot of people fall in the ocean, but the boat is still floating.