Market research

I need a market research for a fashion accessoire. The accessoire will be used by many global companies with a minimum of circa 500 employes with mainly office locations. People with a job in production will be not focused.
The problem is that it is cross section of following criteria:
• Global companies
• Mainly with office jobs
• With a minimum of approx. 60.000 USD income per year (that is why I focuse on law firms, banks, insurances, fonds, large companies)

You have to figure out:
1. How many people work in offices worldwide?
2. Branches:
How many people work worldwide in:
• Global Law firms (the biggest 100)
• Insurance companies (
• Banks (approx. the 50 biggest banks)
• Airlines
• Accounting companies (the biggest 10)
• Tax companies

I need the results in total AND ideally split for Europe, America, Asia

3. Biggest Companies
I need the number of employees of the biggest companies according to the stock exchange indices.
• DAX (Germany)
• FTSI 100
• FTSI 250
• FTSI 350
• Nikkei 225
• MSCI Global
• Dow Jones Global Titan
I need every result as a number shown as Powerpoint with footnote and link.