I must be psychic too, because I concur 
The best analogy I can think of is: Bitcoin is like UUCP, which was invented in 1978 and was actively used for 20 years, then when TCP/IP Internet got popular, UUCP usage dropped, but one of the last legacy UUCP services was shut down only in 2012, although very few people used it since 2000.
Bitcoin now is like UUCP in 1994 when PPP connection protocol was standardized. It can still grow, but not at its prior rate, and new emerging protocols and technologies are on the rise to make it obsolete within a few years. Or even faster than that, as the time it takes to develop technologies has contracted, as numerous examples of late show.
How about this analogy?
Do you even understand that your examples are all services? You can switch to another service in seconds and the cost of doing so is nearly zero. However, ipv4 had a first mover advantage against other packet transfer methods, inclidung vastly superior ipv6. That is the analogy that anybody who understands anything about bitcoin would make. You don't, so really, just go somewhere for 5 years.
The best analogy I can think of is: Bitcoin is like UUCP, which was invented in 1978 and was actively used for 20 years, then when TCP/IP Internet got popular, UUCP usage dropped, but one of the last legacy UUCP services was shut down only in 2012, although very few people used it since 2000.
Bitcoin now is like UUCP in 1994 when PPP connection protocol was standardized. It can still grow, but not at its prior rate, and new emerging protocols and technologies are on the rise to make it obsolete within a few years. Or even faster than that, as the time it takes to develop technologies has contracted, as numerous examples of late show.
How about this analogy?
What do any of the newer alt coins do that bitcoin does not? What evidence do you have that any alt coins whatsoever are gaining ground on bitcoin? I guess half a billion dollars of VC funding didn't get the memo
. Anyway bitcoin isn't even the first electronic cash system to exist.