Rollei/DHW and other manufacturers make electronic shutters.
now, your average joe who buys a $250 lens off ebay might not use their lens enough to justify spending $1200 or so on an electronic shutter+controller(and a shutter for each lens!), but a working professional who is using(and renting their camera to themself on jobs) can easily justify that cost, despite the high cost of buying in.
I do agree, however, that a "simple" electronic shutter could be produced, but remember this: YOU CAN'T HAVE YOUR CAKE AND EAT IT TOO!
If you want it "cheap", you probably won't have the best quality, and post-purchase support/repair ability. If you want those things(or a person on an end of a telephone to speak too), you'll need to be willing to spend more $$$.
I've assisted a number of architectural photographers(BIG LF users pre-digital and the move to smaller formats, in general) and asked them about their servicing/maintenance of their equipment. Most would use their equipment enough to never really justify getting a service done, unless something showed up as being "wrong"... Just like exercising your body, exercising a lens can help keep you "in shape". If you don't work yourself out(or your shutter), you'll get slow, and eventually stuff up completely.
Basically "use it or lose it". I'm only using lenses that have Copal 0/1 shutters, but have a few older "parts" lenses that I just keep in the cupboard in case I need to repair something, but so far nothing's needed to be repaired/replaced thus far. But I'm prepared if I do!
Most amateurs are too fuss-pot about the technical and cosmetic condition of their equipment IMO, especially justifying the small amount of usage they show it.
Just buy yourself a shutter tester, test your lenses 1x/mo and write down any adjustments to speed so you know what you're at. IME, a CLA isn't needed unless a shutter is stuffed up completely, or some simple "exercise" isn't going to free things up prior to use.
-Dan