equities - Data exported from Capital IQ, FactSet, Bloomberg, Compustat

I'm looking for reliable data on US equity fundamentals, but not sure which vendor provides these features:

1. Unlimited data export



2. Coverage of disbanded entities (bankruptcies, M&A)


3. Financial statements, including values initially stated by the company


4. Historical data prior to 1990

Does any of the vendors have a comprehensive list of variables available for each company through its platform? Or a sample profile exported from its dataset?

I found one for Compustat and Zacks, but not for the others. Basic financials (earnings, net margin, price) are freely available, but vendors like Capital IQ have a more comprehensive coverage.

Or maybe some vendor sells all historical data on US public companies as a single dataset?