I suspect this is because they don't have contracts with enforceable SLAs yet. When they do, you will see more 'degraded performance'.
People get credits for 'outages', but if it is sometimes working for someone somewhere then that is the convenient fiction/loophole a lot of companies use.
One CFO forced us to use AWS status data for the SLA reports to key clients. One dev was even pulled aside to make a branded page that reported AWS status as our own and made a big deal about forcing support to share the page when a client complained.
People get credits for 'outages', but if it is sometimes working for someone somewhere then that is the convenient fiction/loophole a lot of companies use.