Well, my client using Oracle service said they are very helpful in resolving issues, so your mileage may vary I guess.

It is behemoth of software - been in business for decades and is less risky than some random startup to rely on. I know that biggest UK supermarkets, retailers use Oracle for their HR etc. I've seen some of that software - it is pretty good and has extensive customisation.

Sometimes boring and old is what you need.

Okay, and when this stops being maintained or bunch of bugs are found, and your business need support now - what then? People pay for a service because somebody is there to also help them out when SHTF.

I also don't understand what digital means in biological structure.