will future of new web developers might be in danger because of ready made scripts

i am asking a general question here as there are variety of templates and ready made scripts and solutions available on platforms like envato market etc . isn't the future of new web developers is in danger. From Bussiness solutions like CRM, POS etc to medical softwares everything is already made by some big developers . As i am a freelance web developer i think most of the clients come to us because of unawareness. They pay us good for custom websites etc while same kind of things are already available in a cheap license of 30$ to 100$ on envato market etc and they pay us good amount of dollars and time investment also . Please give your views about this concern. and is it the right platform to ask this kind of questions?