The same heliostats can be used for all the above tasks. A heliostat can be moved from one building to another or one task to another. The heliostat, once many uses have become established is a commodity which will be manufactured, after a time, by several large and efficient manufacturers. Heliostats and samelight can be used extensively in space and on other planets as we colonize them. Indeed, samelight and the uses we discover for it here on earth may be the crucial boost to give us confidence to get off our asses and out into space.
Some planets have no clouds and therefore abundant samelight.
In space, samelight is as easy to have as sunlight. The great problem I see with samelight is fire hazard. It will be tempting to make concentrating heliostats that throw a beam of concentrated, lethally hot sunlight, rather than reflecting one sun to fixed concentrating targets. This hazard may be so great that even if a safe business is started using flat heliostats and concentrating targets the devices will soon be misused and the entire business brought into jeopardy and perhaps finally failure. First Uses Trivial uses may lead the way.