Good soundbite, but if using 200MB of extra space would let you lower your prices while offering the same service (by increasing developer productivity) then I bet many customers would take that.
And did you try spending a person-week or so of dev time trying to minimize the size of the Python version? That would be a much smaller one-off cost than the costs of migrating everything to Lua, and I could easily imagine you'd get it down by one or two orders of magnitude. (You could do the same for Lua too I'm sure, but if we're talking about say 5mb vs 200k then that's "who cares?" size for most customers).
And did you try spending a person-week or so of dev time trying to minimize the size of the Python version? That would be a much smaller one-off cost than the costs of migrating everything to Lua, and I could easily imagine you'd get it down by one or two orders of magnitude. (You could do the same for Lua too I'm sure, but if we're talking about say 5mb vs 200k then that's "who cares?" size for most customers).