Why every whiteboard app wants your email first
Try this experiment: open any of the big whiteboard apps in a fresh browser and time how long until you can draw a rectangle. Between you and that rectangle stand an email field, a password (or the OAuth dance), a "what will you use this for?" survey, a workspace name, and an invitation screen for teammates you don't have. Five minutes if you sprint. For a rectangle.
The wall isn't lazy engineering
Serving a canvas costs fractions of a cent — the drawing was never the expensive part. The login wall exists because the account is the business: your email enters a nurture sequence, your workspace becomes a growth surface ("invite teammates" is the product's actual job), and your boards become retention — the more thinking you store there, the more leaving costs you. My workshop board didn't get locked by accident that Tuesday; member limits are a designed moment, placed precisely where the pain is sharpest. Hostage-taking as a pricing page.
When the wall is worth it
Fairness requires saying: if your team genuinely lives in shared boards — five cursors, comments, standing documents — the SaaS whiteboards earn their accounts. Live sync needs servers; servers need revenue; revenue needs accounts. The economics are honest even when the onboarding isn't.
The other ninety percent
But watch what people actually do at whiteboards: think alone, sketch during a call while screen-sharing, teach a room. No second cursor in sight. For that entire majority of board-moments, the account buys nothing and costs the five minutes, the nurture emails, and the member-limit Tuesday. A board that opens already working — saving locally, exporting to files nobody can lock — isn't a lesser whiteboard. It's the whole product, minus the parts that were never for you.