a soccer team has a finite number of players on the field. may have a sub limit per game or at least sub rules where subs need to be used thoughtfully. may need to be concerned with do i win the game or does subbing in bad players affect the outcome. but even then they may look for a chance to get in the last roster guys in a 5-0 blowout.
likewise, your baseball analogy, i have been the 1B who makes 3 errors in an inning in tee ball. but i also know i grew up to be fast as heck and good hand eye and think baseball screwed up with how harsh it was on me at a 5 year old age. the smug folks ignoring my 110H friend example might consider the long game a little with their certitudes. at one point he was being thrown a bone with the odd meet. at another he was one of the team stars.
XC only compares in sports terms if there are finite roster slots. i get 7 for varsity but some states have no varsity limits, or open JV, or we had frosh teams too. once you have open rosters, in sports terms, this ceases to be the scrub midfielder who is wanting to be the 19th guy on an 18 man list. i can give him his shot and he's not squeezing the first 18. he is not making the first 5 scorers worse. he is not making the varsity slower. he is not making throwing errors to first that cost the team. he just doesn't do so hot for himself -- at least at first.
you're like, but we can't take everyone. but this isn't true. my junior high track team took everyone for practice. meets were earned. but anyone could practice. and anyone who did practice, like my buddy, was usually thrown the odd bone. every 2-3 weeks instead of running both mile and 2 mile or 100 and 200, you ran 1 event, and they got a try. the world does not end, you don't do that much worse at the meet, and the scrub keeps trying. and a couple early scrubs i knew, rare meets and zero points in junior high, were stars at the end.
people mention budgets and bus numbers, but we're talking about singlets and adding 1 more bus. do you know how many players texas football teams dress for HS? at varsity + JV + soph + frosh? how many buses of kids go to football games, football, pads and equipment, band, drill team? but XC can't have a second bus. sorry but if you buy that you have sold out your own sport. whatever.
and the one that's worse is the subjective ego thing of embarrassment. no one is telling you no. the bus isn't full. the JV and frosh could use a body to score perhaps. and you're all snooty that the kid runs 25.
and you wonder why some schools have like 10 kids in the whole program. it's the varsity and whoever else bothers. and on paper they will all be pretty quick, but that has more to do with you created an environment designed to run off people. to make you artificially look good. when really it's the junior high already handed you fast kids who showed up running 4:30 or better.
my answer to all your bull is southlake. you can make the team a budget priority. you can chase success in bulk. you can have fast kids and have a bunch of scrubs. same time. not mutually exclusive. you just are either playing along with inconsistent budget limits not applying to other sports, or you are a baby nazi who only wants to associate his team with speed. but that doesn't mean your team is good or better than the next guy's. that just means you are an exclusive brand exercise.