[lynguist]

I would probably consider 50 MB that size, or in the special case of metered connections 20 MB (for example downloading maps or so).

[jfoster]

50 MB might be fine for desktops on effectively unlimited & high speed connections, but consider the case of a mobile user with a few GB of data per month. Might be unacceptable for them. Not sure how common that case is in the US, but certainly possible outside the US.