For the technology available, there were a lot of quality saw manufactures up Intel the mid 70's , then shareholders and consumer markets sort of got there hooks in the idea.
Were Stihl started to take over was there world wide dominance, there share on the market proved the research and development , never jeopardizing the quality, constantly improving the technology.
Product liability lawsuits broke the back of a lot of companies, Some vacuum cleaner company bought out the ideas of a few of those companies that had something worth buying.
In the late 60's I would have swore that there would never be better saws then some of the Mac's and Homie's , Remington, Mall, really a lot of companies made good tools also. But it held back Stihl distributorship in the US in a lot of areas, once they had a toe-hold on the west side, it was almost overnight success. Timing had a lot to do with that rain-dance!
If your father's first Stihl was a
Lightning , , he would have been part of spreading the word.
Contra's were another top of any line saw for the time,
08's had a huge fallowing for a smaller saw of the time, the 08 may have been traded in on an
S-10 The S-10 might have been traded in for an 041 ?