Square space is one provider that commonly does these kinds of placements and I can confirm that it’s an excellent product (albeit expensive).
Where do you think your friend found out about onshape?
I've asked them but they may be asleep
It's not a conscious decision, your mind is familiar with some of the brands more than others, for whatever reason, and that tricks you into trust. Sure, you still might look into reviews and stuff, but your mind has already been primed to some extent in what brands you even consider.
That is not to say that it doesn't work. The fact that the family member got into the pyramid scheme in the first place is proof that some people are susceptible to it. But also, none of us (the family) gave in to her advertisement, so obviously that's proof that a lot of people also aren't susceptible to it.