Getting into Arkham Horror, after coming in from Magic the Gathering...

While I enjoyed the Core Set, It's explained to me that it's still basically just a tiny sliver of the actual game, and knowing all the upgrade route feels nuts, poorly researched buying options are much more punishing. I'm already feeling buyer's remorse for getting Labyrinth of Lunacy based on the feedback I received on why I got a subpar experience on gameplay for it is just not knowing it's supposed to be a Convention game played with 3 copies at the same time (Which confuses me to why even bother selling a vastly inferior 1 copy version of the Scenario?).

Contrast that to the buy-in experience for a Precon MtG Commander deck where it's a $40~60 buy-in, where I know there are dedicated shops that would run events for it and will have other players available... as opposed to LCGs where I'm going to be doing most of the legwork of actually finding other people to play with.

Which also kind of brings me to one other point of why would anyone else other than the person who already bought Core Set be buying any other product?

Curious what the sub thinks and if I should just be approaching this from a different mindset. I am well enfranchised into MtG so maybe what I see as easy spending decisions there ( Unrefined Skeleton of a Deck -> Timely Eventual Upgrades ) may not also make sense ( Paying for an entire product all in )

EDIT:

Definitely still feels like a difference in mentality, for MtG I've never really felt the need to have an incredibly expensive competitive deck. Kinda odd that people are equating their expected experience for TCGs to having to keep up with the competitiveness. I feel like Commander definitely changed how a lot of people (especially me) ended up approaching MtG

EDIT 2:

I would concede now that LCGs while definitely having a higher floor of buy-in does have a much much much lower floor of completion and cost for being optimal as there are no chase/scarce cards.

TCGs have a much lower floor of buy-in but an infinitely higher ceiling on cost. Fortunately the ceiling is not very high in the metas I play in and it did significantly color my opinion on this matter.