Well maybe not corporates only but its the main revenue source for Microsoft and a field where MS has a real edge over other tech companies.
Traditionally MS revenue is to 78% from corporates / businesses.
B2C isn't their stronghold (e.g. just compare MS Office prices for business with the prices for consumer licenses).
They invest 10 billion USD at a 29 billion USD valuation so they control 34.5% of the voting rights which means blocking minority and hence certainly some clauses that direct competitors can't be ChatGPT clients without their approval.
The deal likely also comes with typical clauses such as "right of first refusal" so the company can't be sold to a competitor either without their consent.
fintechSGNYC OP t1_j3xjgei wrote
Reply to comment by abatt1976 in [D] Microsoft ChatGPT investment isn't about Bing but about Cortana by fintechSGNYC
Good point