Hire more people or be prepared for long development times if you want all of the above. Restrict scope otherwise.
Internationalization is not a must if a single-language market is large enough for you. Tacking it on later will be painful of course. The same with security and accessibility, not having it may be acceptable in some environments.
Internationalization is not a must if a single-language market is large enough for you. Tacking it on later will be painful of course. The same with security and accessibility, not having it may be acceptable in some environments.