Co-Founder of https://www.cloudternal.com. I'm really surprised they have a limit of 100k records on their tables. They will have the same issue that Airtable has, it's just not suited for enterprise.
We believe there is still a gap in the "database app for non-technical users" space, so we created one that can handle millions of records, provides granular permissions down to the cell level and targets those creative (yet non-developer) users who end up pushing Excel beyond its usefulness.