First you have to have a concept that people will want to play. Sure, you can go CS route and just do adoptibles, but many players won't want to play it unless you have extremely good art, which brings us to the next issue:
You need someone who is willing to create the art that people want to actually stare at for periods of time. While art is subjective, you want to appeal to a broad userbase.
Good art can only go so far, even with doing an adoptibles site. You have to know how to code various aspects of a site and bring it together so it can handle a lot of traffic (hopefully), and how to code mechanics that people will want to engage with. (even CS has other aspects that people can engage with, such as the drawing issue, and dressing up your pets, and creating scenes)
But, even if you have those aspects down, you still need a server, and that takes money, and a domain.
Then, websites tend to have issues balancing the free to play vs pay to play model (which is where I do think FR does well). If you get too much pay to play, then you drive people away who can't, if you get too free to play, then no one has incentive to actually pay.
Add in many players are lower income/minors and they CAN'T often toss a lot of money at a site often and the competition from existing site, it can be extremely difficult (not impossible).
I would love to create my own pet site, because there are so many things I would love to have and know that none of the petsites I play will have them, or they won't do them like I want. Sadly, it isn't in the cards
Re: Pet sites
First you have to have a concept that people will want to play. Sure, you can go CS route and just do adoptibles, but many players won't want to play it unless you have extremely good art, which brings us to the next issue:
You need someone who is willing to create the art that people want to actually stare at for periods of time. While art is subjective, you want to appeal to a broad userbase.
Good art can only go so far, even with doing an adoptibles site. You have to know how to code various aspects of a site and bring it together so it can handle a lot of traffic (hopefully), and how to code mechanics that people will want to engage with. (even CS has other aspects that people can engage with, such as the drawing issue, and dressing up your pets, and creating scenes)
But, even if you have those aspects down, you still need a server, and that takes money, and a domain.
Then, websites tend to have issues balancing the free to play vs pay to play model (which is where I do think FR does well). If you get too much pay to play, then you drive people away who can't, if you get too free to play, then no one has incentive to actually pay.
Add in many players are lower income/minors and they CAN'T often toss a lot of money at a site often and the competition from existing site, it can be extremely difficult (not impossible).
I would love to create my own pet site, because there are so many things I would love to have and know that none of the petsites I play will have them, or they won't do them like I want. Sadly, it isn't in the cards