i doubt elektron is more than a couple handfuls of people in sweden, LA, tokyo… and some contract work done for various things when new products are in design phase.
there are many a successful gear company with a 20 to 30 small products that are built in house and are only a handful of people. not just talking about modular manufacturers. 
if you want to compare elektron to another company look at DSI. seems a reasonable comparison. though i think DSI does more volume in sales.
edit: DSI has 8 employees as of 2013
" Dave Smith Instruments, started in 2002 and has eight employees in a small second-floor office in San Francisco’s Little Italy neighborhood."
