[hn-ifs]

I suppose the issue here is trusting Google with your personal and business data. Mining that information for targeting advertising aside, it's not unheard of Google locking people out of their accounts with no reasons or obvious recourse.

I wonder what the best non-mega corp solution there is for this.

[Imustaskforhelp]

Cryptpad comes to my mind although I suppose it might lack some features of google sheets but it has a web interface.

For a non web interface, things like libreoffice can be good too but I think that you are asking for a web version..

I am not sure if libreoffice has a web version, it seems that they do but I can't find much information and I might recommend crytpad personally so.