Kinda depends if you want to find developers willing and able to reinvent a lot of things or not. If you can justify rebuilding a textbox or scrollbar (for example) then perhaps you can roll your own solution. Otherwise you look for libraries.
The web is rich with 3rd party support for a lot of things, so as a platform it's attractive. If you need to grow, you can be more confident it will have what you need. But with that also comes a lot of bloat, legacy and poor decisions too.
The web is rich with 3rd party support for a lot of things, so as a platform it's attractive. If you need to grow, you can be more confident it will have what you need. But with that also comes a lot of bloat, legacy and poor decisions too.