What happens to enterprise apps like SAP and S4 on the cloud that swallow huge amounts of RAM for their in-memory database? AWS, GCP, and Azure must be running

What happens to enterprise apps like SAP and S4 on the cloud that swallow huge amounts of RAM for their in-memory database? AWS, GCP, and Azure must be running around? With their predatory pricing customers were already hesitant about upgrades, it now gets more difficult. Extend EOL for ECC?