Seconding and expanding on what Hacksterix commented on April 18 at 12:37 PM (two posts ago)…
Grist Labs' company ethos appears to be compatible with Proton's. With only about 10 employees currently and an estimated annual revenue under a million dollars [cf. https://compworth.com/company/grist-labs], they may be very receptive to acquisition by Proton.
The costs would probably be trivial at Proton's scale—probably just several million dollars, a pittance compared to the savings to Proton in R&D, the extensive value (note that Grist comprises a spreadsheet, a relational database, and much more, all in one integrated package), and the ROI that marrying it into Proton's suite would entail from the avalanche of conversions from Google Workspace defectors.
Cation
Seconding and expanding on what Hacksterix commented on April 18 at 12:37 PM (two posts ago)…
Grist Labs' company ethos appears to be compatible with Proton's. With only about 10 employees currently and an estimated annual revenue under a million dollars [cf. https://compworth.com/company/grist-labs], they may be very receptive to acquisition by Proton.
The costs would probably be trivial at Proton's scale—probably just several million dollars, a pittance compared to the savings to Proton in R&D, the extensive value (note that Grist comprises a spreadsheet, a relational database, and much more, all in one integrated package), and the ROI that marrying it into Proton's suite would entail from the avalanche of conversions from Google Workspace defectors.