KNX has some serious advantages for both the user and installer, including:
KNX does not come cheap; a basic KNX home automation system will easily cost in the region of 20-30K euros to install. However, if you have the option, a wired system is the best choice. This is especially true for new construction projects, because the installation can be worked into the construction process.
KNX does not provide integration with Home automation standards such as Apple HomeKit, Google Home or Amazon Alexa. This is where you need a Thinka. How does Thinka connect KNX and Homekit?