A lot of businesses do this. It's far less risky to copy a successful model than it is to explore the unknown space of products/services and find out what a successful model is, what to price it at, etc.
This is part of the reason systems like the patent system were created for inventions: to encourage people to bother exploring risky unknown spaces to develop inventions by granting them essentially a short term monopoly to harvest their reward which they would then compete against after a time period so society could further benefit from their finding by allowing competition to drive prices down and iterate on those inventions.
Obviously the patent system doesn't really serve this purpose anymore like so many systems that have been sidestepped/bypassed, changed through regulatory capture and corrupted by pure profit seeking behaviors.
This is part of the reason systems like the patent system were created for inventions: to encourage people to bother exploring risky unknown spaces to develop inventions by granting them essentially a short term monopoly to harvest their reward which they would then compete against after a time period so society could further benefit from their finding by allowing competition to drive prices down and iterate on those inventions.
Obviously the patent system doesn't really serve this purpose anymore like so many systems that have been sidestepped/bypassed, changed through regulatory capture and corrupted by pure profit seeking behaviors.