Min 3cr for Platinum Corporate card. There are credit limits, it's not like the Platinum Charge.
Before the recent additions (Marriott Gold, Metal, Vouchers), it was definitely not worth it beyond the first year (25k amazon voucher/29k Taj). It still lacks 3x on International spends and 5x on Gyftr.
Also, this does not support any place which requires auto charging your card - example Google Ads.