I run a VA business with my brother so we deal with a lot of spreadsheets. We have had a few real estate firms as our customers. They put EVERYTHING in Google Sheets and Excel.

Everything from regulatory document , CRM data and checklists everything. Having billions of row might sound problematic but when a google sheet gets capped or slow they will either create a new sheet on the same file or a new file. A RE firm over its 10 year operations has hundreds and hundreds of spreadsheets. They even have spreadsheets to locate spreadsheets.....

Having everything in one spot is a slightly better thing to do. You can't pry spreadsheets from small businesses no matter what justification you have. From a practical standpoint upping the limits is kind of a good thing.

We usually clean everything up manually and create a proper database that they can query easily. Or they can just tell us what they need through email.