there is a specific niche which I would like to target by providing a complete enterprise level software solution....

the problem is, where do i begin ? meaning, i come from writing just desktop software on VB/ASP .net/PHP/mysql and suddenly unfamiliar terms popup like Oracle, SAP Business Information Warehouse, J2EE....

obviously, something is pointing towards Java, is it common for software suites, or solutions to be developed 100% on Java technology and standards? Are there any other platform to build enterprise level software on ?

i am still lacking understanding what exactly is "Enterprise level" ? what is sufficient condition to call a software that sells for $199 and then suddenly it's $19,999 for "enterprise" package.

I dont understand why there is such a huge discrepancy between "standard" and "enterprise" versions of software. Is it just attempting to bag large corporations on a spending spree ?

so why does one choose to develop so called "enterprise" softwares ? is it because of the large inflated price tag you can justify with ?

i would also like some more enterpreneural resources on starting your own enterprise software company in a niche....

Thank you for reading, i am still trying to find the right questions.